[KOE-155] Implemented send-as option in shared folder dialog. Not fully working, as I cannot link it back to Outlook folders. Committing for when we can fix this.

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/ReplyFlags/FeatureReplyFlags.cs

@@ -180,7 +180,7 @@ namespace Acacia.Features.ReplyFlags
             string id = (string)mail.GetProperty(OutlookConstants.PR_ZPUSH_MESSAGE_ID);
             using (IFolder folder = mail.Parent)
             {
-                string folderId = (string)folder.GetProperty(OutlookConstants.PR_ZPUSH_FOLDER_ID);
+                string folderId = (string)folder.GetProperty(OutlookConstants.PR_ZPUSH_SYNC_ID);
                 string value = ReplyFlags.VerbToExchange(verb) + "/" + id + "/" + folderId;
                 Logger.Instance.Trace(this, "Reply header: {0}", value);
                 response.SetProperty(Constants.ZPUSH_REPLY_HEADER, value);

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SendAs/FeatureSendAs.cs

@@ -48,6 +48,15 @@ namespace Acacia.Features.SendAs
         }
         private static readonly BoolOption OPTION_SEND_AS_OWNER = new BoolOption("SendAsOwner", true);
 
+        [AcaciaOption("Disables GAB look ups for senders. GAB lookups are required if a username exists on different accounts, " +
+                      "as in that case Outlook fails to determine the email address of the sender.")]
+        public bool GABLookup
+        {
+            get { return GetOption(OPTION_GAB_LOOKUP); }
+            set { SetOption(OPTION_GAB_LOOKUP, value); }
+        }
+        private static readonly BoolOption OPTION_GAB_LOOKUP = new BoolOption("GABLookup", true);
+
         public override void Startup()
         {
             if (MailEvents != null)
@@ -76,53 +85,75 @@ namespace Acacia.Features.SendAs
             {
                 ZPushAccount zpush = Watcher.Accounts.GetAccount(store);
                 Logger.Instance.Trace(this, "Checking ZPush: {0}", zpush);
-                if (zpush != null)
+                if (zpush == null)
-                {
+                    return;
+
                 // Check if the containing folder is a shared folder
                 using (IFolder parent = mail.Parent)
+                using (IRecipient recip = FindSendAsSender(zpush, parent))
                 {
-                        Logger.Instance.Trace(this, "Checking, Parent folder: {0}", parent.Name);
+                    if (recip == null || !recip.IsResolved)
-                        SharedFolder shared = _sharedFolders.GetSharedFolder(parent);
+                        return;
-                        if (shared != null)
+
-                            Logger.Instance.Trace(this, "Checking, Shared folder: {0}, flags={1}", shared, shared?.Flags);
+                    // Set the sender
-                        else
-                            Logger.Instance.Trace(this, "Not a shared folder");
-                        if (shared != null && shared.FlagSendAsOwner)
-                        {
-                            Logger.Instance.Trace(this, "Checking, Shared folder owner: {0}", shared.Store.UserName);
-                            // It's a shared folder, use the owner as the sender if possible
-                            using (IRecipient recip = FindSendAsSender(zpush, shared.Store))
-                            {
-                                if (recip != null && recip.IsResolved)
-                                {
                     Logger.Instance.Trace(this, "Sending as: {0}", recip.Address);
                     using (IAddressEntry address = recip.GetAddressEntry())
                     {
                         response.SetSender(address);
                     }
                 }
+            }
+        }
+
+        /// <summary>
+        /// Finds the sender to use for an email sent from the specified folder.
+        /// </summary>
+        /// <returns>The sender, or null if the default sender should be used</returns>
+        private IRecipient FindSendAsSender(ZPushAccount zpush, IFolder folder)
+        {
+            // First check if the folder is shared
+            if (folder.SyncId.Kind != SyncKind.Shared)
+                return null;
+
+            return FindSendAsSender(zpush, folder, folder.BackendId, null);
+        }
+
+        public IRecipient FindSendAsSender(ZPushAccount zpush, IFolder folder, BackendId id, GABUser user)
+        {
+            // Check for a locally stored address
+            if (id != null)
+            {
+                string address = zpush.GetSendAsAddress(id);
+                if (address != null)
+                {
+                    IRecipient resolved = ThisAddIn.Instance.ResolveRecipient(address);
+                    if (resolved != null)
+                        return resolved;
+                }
+            }
+
+            return null;
+
+            // If we don't have a user, see if we can fetch it from the shared folder state
+            if (user == null && folder != null)
+            {
+                Logger.Instance.Trace(this, "Checking, Parent folder: {0}", folder.Name);
+                SharedFolder shared = _sharedFolders.GetSharedFolder(folder);
+                if (shared != null)
+                    Logger.Instance.Trace(this, "Checking, Shared folder: {0}, flags={1}", shared, shared?.Flags);
                 else
+                    Logger.Instance.Trace(this, "Not a shared folder");
+
+                if (shared != null && shared.FlagSendAsOwner)
                 {
-                                    Logger.Instance.Error(this, "Unable to resolve sender: {0}", shared.Store.UserName);
+                    user = shared.Store;
-                                }
-                            }
-                        }
-                    }
-                }
                 }
             }
 
-        [AcaciaOption("Disables GAB look ups for senders. GAB lookups are required if a username exists on different accounts, " +
+            // If we don't have a user, there's nothing to resolve
-                      "as in that case Outlook fails to determine the email address of the sender.")]
+            if (user == null)
-        public bool GABLookup
+                return null;
-        {
-            get { return GetOption(OPTION_GAB_LOOKUP); }
-            set { SetOption(OPTION_GAB_LOOKUP, value); }
-        }
-        private static readonly BoolOption OPTION_GAB_LOOKUP = new BoolOption("GABLookup", true);
 
-        internal IRecipient FindSendAsSender(ZPushAccount zpush, GABUser user)
-        {
             // First try a simple resolve, this will work if the username is unique
             IRecipient recip = ThisAddIn.Instance.ResolveRecipient(user.UserName);
             if (recip != null)

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/FeatureSharedFolders.cs

@@ -1,5 +1,6 @@
 
 using Acacia.Features.SecondaryContacts;
+using Acacia.Features.SendAs;
 /// Copyright 2016 Kopano b.v.
 /// 
 /// This program is free software: you can redistribute it and/or modify
@@ -191,7 +192,7 @@ namespace Acacia.Features.SharedFolders
 
         public static bool IsSharedFolder(IFolder folder)
         {
-            string id = (string)folder.GetProperty(OutlookConstants.PR_ZPUSH_FOLDER_ID);
+            string id = (string)folder.GetProperty(OutlookConstants.PR_ZPUSH_SYNC_ID);
             return id?.StartsWith("S") == true;
         }
 
@@ -485,5 +486,45 @@ namespace Acacia.Features.SharedFolders
                 Logger.Instance.Error(this, "Error removing shared store: {0}: {1}", share, e);
             }
         }
+
+        #region Send-As helpers
+
+        public string FindSendAsAddress(ZPushAccount account, AvailableFolder folder, string suggestion)
+        {
+            // Only mail folders have send-as
+            if (!folder.Type.IsMail())
+                return null;
+
+            // Check if we have send-as at all
+            FeatureSendAs sendAs = ThisAddIn.Instance.GetFeature<FeatureSendAs>();
+            if (sendAs == null)
+                return null;
+
+            using (IRecipient sender = sendAs.FindSendAsSender(account, null, folder.BackendId, folder.Store))
+            {
+                if (sender != null && sender.IsResolved)
+                    return sender.Address;
+            }
+
+            return suggestion;
+        }
+
+        public string FindSendAsAddress(ZPushAccount account, GABUser store, string suggestion)
+        {
+            // Check if we have send-as at all
+            FeatureSendAs sendAs = ThisAddIn.Instance.GetFeature<FeatureSendAs>();
+            if (sendAs == null)
+                return null;
+
+            using (IRecipient sender = sendAs.FindSendAsSender(account, null, null, store))
+            {
+                if (sender != null && sender.IsResolved)
+                    return sender.Address;
+            }
+
+            return suggestion;
+        }
+
+        #endregion
     }
 }

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/SharedFoldersDialog.Designer.cs

@@ -45,11 +45,13 @@
             this.textName = new System.Windows.Forms.TextBox();
             this._labelSendAs = new System.Windows.Forms.Label();
             this.checkSendAs = new System.Windows.Forms.CheckBox();
+            this._labelSendAsAddress = new System.Windows.Forms.Label();
+            this.textSendAsAddress = new System.Windows.Forms.TextBox();
             this._labelReminders = new System.Windows.Forms.Label();
             this.checkReminders = new System.Windows.Forms.CheckBox();
             this._labelPermissions = new System.Windows.Forms.Label();
-            this.dialogButtons = new Acacia.Controls.KDialogButtons();
             this._labelRestartRequired = new System.Windows.Forms.Label();
+            this.dialogButtons = new Acacia.Controls.KDialogButtons();
             this._layout.SuspendLayout();
             this._mainBusyHider.SuspendLayout();
             this._layoutMain.SuspendLayout();
@@ -137,14 +139,16 @@
             resources.ApplyResources(this._layoutOptions, "_layoutOptions");
             this._layoutOptions.Controls.Add(this._labelWholeStore, 0, 0);
             this._layoutOptions.Controls.Add(this.checkWholeStore, 1, 0);
-            this._layoutOptions.Controls.Add(this.labelPermissionsValue, 1, 4);
+            this._layoutOptions.Controls.Add(this.labelPermissionsValue, 1, 5);
             this._layoutOptions.Controls.Add(this._labelName, 0, 1);
             this._layoutOptions.Controls.Add(this.textName, 1, 1);
             this._layoutOptions.Controls.Add(this._labelSendAs, 0, 2);
             this._layoutOptions.Controls.Add(this.checkSendAs, 1, 2);
-            this._layoutOptions.Controls.Add(this._labelReminders, 0, 3);
+            this._layoutOptions.Controls.Add(this._labelSendAsAddress, 0, 3);
-            this._layoutOptions.Controls.Add(this.checkReminders, 1, 3);
+            this._layoutOptions.Controls.Add(this.textSendAsAddress, 1, 3);
-            this._layoutOptions.Controls.Add(this._labelPermissions, 0, 4);
+            this._layoutOptions.Controls.Add(this._labelReminders, 0, 4);
+            this._layoutOptions.Controls.Add(this.checkReminders, 1, 4);
+            this._layoutOptions.Controls.Add(this._labelPermissions, 0, 5);
             this._layoutOptions.Controls.Add(this._labelRestartRequired, 2, 0);
             this._layoutOptions.Name = "_layoutOptions";
             // 
@@ -192,6 +196,18 @@
             this.checkSendAs.UseVisualStyleBackColor = true;
             this.checkSendAs.CheckedChanged += new System.EventHandler(this.checkSendAs_CheckedChanged);
             // 
+            // _labelSendAsAddress
+            // 
+            resources.ApplyResources(this._labelSendAsAddress, "_labelSendAsAddress");
+            this._labelSendAsAddress.Name = "_labelSendAsAddress";
+            // 
+            // textSendAsAddress
+            // 
+            this._layoutOptions.SetColumnSpan(this.textSendAsAddress, 2);
+            resources.ApplyResources(this.textSendAsAddress, "textSendAsAddress");
+            this.textSendAsAddress.Name = "textSendAsAddress";
+            this.textSendAsAddress.TextChanged += new System.EventHandler(this.textSendAsAddress_TextChanged);
+            // 
             // _labelReminders
             // 
             resources.ApplyResources(this._labelReminders, "_labelReminders");
@@ -209,6 +225,11 @@
             resources.ApplyResources(this._labelPermissions, "_labelPermissions");
             this._labelPermissions.Name = "_labelPermissions";
             // 
+            // _labelRestartRequired
+            // 
+            resources.ApplyResources(this._labelRestartRequired, "_labelRestartRequired");
+            this._labelRestartRequired.Name = "_labelRestartRequired";
+            // 
             // dialogButtons
             // 
             resources.ApplyResources(this.dialogButtons, "dialogButtons");
@@ -219,11 +240,6 @@
             this.dialogButtons.Name = "dialogButtons";
             this.dialogButtons.Apply += new System.EventHandler(this.dialogButtons_Apply);
             // 
-            // _labelRestartRequired
-            // 
-            resources.ApplyResources(this._labelRestartRequired, "_labelRestartRequired");
-            this._labelRestartRequired.Name = "_labelRestartRequired";
-            // 
             // SharedFoldersDialog
             // 
             resources.ApplyResources(this, "$this");
@@ -270,5 +286,7 @@
         private System.Windows.Forms.CheckBox checkWholeStore;
         private System.Windows.Forms.Label labelPermissionsValue;
         private System.Windows.Forms.Label _labelRestartRequired;
+        private System.Windows.Forms.Label _labelSendAsAddress;
+        private System.Windows.Forms.TextBox textSendAsAddress;
     }
 }

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/SharedFoldersDialog.cs

@@ -16,6 +16,7 @@
 
 using Acacia.Controls;
 using Acacia.Features.GAB;
+using Acacia.Features.SendAs;
 using Acacia.Stubs;
 using Acacia.UI;
 using Acacia.UI.Outlook;
@@ -412,7 +413,8 @@ namespace Acacia.Features.SharedFolders
 
                 // Add the node
                 node = new StoreTreeNode(_folders, gabLookup.GAB,
-                                         user, user.DisplayName, currentShares ?? new Dictionary<BackendId, SharedFolder>(),
+                                         user, _feature.FindSendAsAddress(_account, user, null),
+                                         user.DisplayName, currentShares ?? new Dictionary<BackendId, SharedFolder>(),
                                          wholeStore);
                 node.DirtyChanged += UserSharesChanged;
                 node.CheckStateChanged += WholeStoreShareChanged;
@@ -499,6 +501,7 @@ namespace Acacia.Features.SharedFolders
             set
             {
                 _labelSendAs.Visible = checkSendAs.Visible = value != null;
+                _labelSendAsAddress.Visible = textSendAsAddress.Visible = _labelSendAs.Visible;
                 if (value != null)
                     checkSendAs.CheckState = value.Value;
             }
@@ -719,6 +722,9 @@ namespace Acacia.Features.SharedFolders
                             OptionSendAs = CheckState.Indeterminate;
                             checkSendAs.ThreeState = true;
                         }
+
+                        TryInitSendAsAddress();
+                        EnableSendAsAddress();
                     }
                     // Reminders shown if any node supports it
                     if (_optionRemindersNodes.Count > 0)
@@ -791,6 +797,9 @@ namespace Acacia.Features.SharedFolders
 
         private void checkSendAs_CheckedChanged(object sender, EventArgs e)
         {
+            // Hide the address unless it makes sense
+            EnableSendAsAddress();
+
             for (int i = 0; i < _optionSendAsNodes.Count; ++i)
             {
                 FolderTreeNode node = _optionSendAsNodes[i];
@@ -805,15 +814,69 @@ namespace Acacia.Features.SharedFolders
                 if (node.SharedFolder.FlagSendAsOwner != sendAs)
                 {
                     node.SharedFolder = node.SharedFolder.WithFlagSendAsOwner(sendAs);
+                    if (sendAs)
+                    {
+                        TryInitSendAsAddress();
+                    }
 
                     // Send-as is applied recursively
                     foreach (FolderTreeNode desc in node.Descendants())
+                    {
+                        if (desc.SharedFolder != null)
                         {
                             desc.SharedFolder = desc.SharedFolder.WithFlagSendAsOwner(sendAs);
                         }
                     }
                 }
             }
+        }
+
+        private void TryInitSendAsAddress()
+        {
+            string email = _feature.FindSendAsAddress(_account, _optionSendAsNodes[0].AvailableFolder, null);
+
+            if (email != null)
+            {
+                textSendAsAddress.Text = email;
+                if (!string.IsNullOrEmpty(email) && _optionSendAsNodes[0].IsShared)
+                {
+                    _optionSendAsNodes[0].SharedFolder.SendAsAddress = email;
+                }
+            }
+            else if (checkSendAs.Checked)
+            {
+                MessageBox.Show("Unable to determine the email address for the folder. " +
+                    "Send-as will only work if you specify the email address manually.",
+                    "Shared Folders", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            }
+        }
+
+        private void EnableSendAsAddress()
+        {
+            // Hide unless there's only one selected, and send as is enabled
+            if (_optionSendAsNodes.Count == 1)
+            {
+                _labelSendAsAddress.Visible = textSendAsAddress.Visible = true;
+                _labelSendAsAddress.Enabled = textSendAsAddress.Enabled = OptionSendAs == CheckState.Checked;
+            }
+            else
+            {
+                _labelSendAsAddress.Visible = textSendAsAddress.Visible = false;
+            }
+        }
+
+        private void textSendAsAddress_TextChanged(object sender, EventArgs e)
+        {
+            for (int i = 0; i < _optionSendAsNodes.Count; ++i)
+            {
+                FolderTreeNode node = _optionSendAsNodes[i];
+
+                if (node.SharedFolder.SendAsAddress != textSendAsAddress.Text)
+                {
+                    node.SharedFolder = node.SharedFolder.WithSendAsAddress(textSendAsAddress.Text);
+                }
+            }
+        }
 
         private void checkReminders_CheckedChanged(object sender, EventArgs e)
         {

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/SharedFoldersDialog.resx

@@ -283,7 +283,7 @@
     <value>3, 38</value>
   </data>
   <data name="kTreeFolders.Size" type="System.Drawing.Size, System.Drawing">
-    <value>442, 250</value>
+    <value>442, 224</value>
   </data>
   <data name="kTreeFolders.TabIndex" type="System.Int32, mscorlib">
     <value>1</value>
@@ -394,7 +394,7 @@
     <value>NoControl</value>
   </data>
   <data name="labelPermissionsValue.Location" type="System.Drawing.Point, System.Drawing">
-    <value>99, 107</value>
+    <value>99, 133</value>
   </data>
   <data name="labelPermissionsValue.Size" type="System.Drawing.Size, System.Drawing">
     <value>346, 20</value>
@@ -543,6 +543,69 @@
   <data name="&gt;&gt;checkSendAs.ZOrder" xml:space="preserve">
     <value>6</value>
   </data>
+  <data name="_labelSendAsAddress.AutoSize" type="System.Boolean, mscorlib">
+    <value>True</value>
+  </data>
+  <data name="_labelSendAsAddress.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
+    <value>Fill</value>
+  </data>
+  <data name="_labelSendAsAddress.ImeMode" type="System.Windows.Forms.ImeMode, System.Windows.Forms">
+    <value>NoControl</value>
+  </data>
+  <data name="_labelSendAsAddress.Location" type="System.Drawing.Point, System.Drawing">
+    <value>3, 80</value>
+  </data>
+  <data name="_labelSendAsAddress.Size" type="System.Drawing.Size, System.Drawing">
+    <value>90, 26</value>
+  </data>
+  <data name="_labelSendAsAddress.TabIndex" type="System.Int32, mscorlib">
+    <value>11</value>
+  </data>
+  <data name="_labelSendAsAddress.Text" xml:space="preserve">
+    <value>Send-as address</value>
+  </data>
+  <data name="_labelSendAsAddress.TextAlign" type="System.Drawing.ContentAlignment, System.Drawing">
+    <value>MiddleLeft</value>
+  </data>
+  <data name="&gt;&gt;_labelSendAsAddress.Name" xml:space="preserve">
+    <value>_labelSendAsAddress</value>
+  </data>
+  <data name="&gt;&gt;_labelSendAsAddress.Type" xml:space="preserve">
+    <value>System.Windows.Forms.Label, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </data>
+  <data name="&gt;&gt;_labelSendAsAddress.Parent" xml:space="preserve">
+    <value>_layoutOptions</value>
+  </data>
+  <data name="&gt;&gt;_labelSendAsAddress.ZOrder" xml:space="preserve">
+    <value>7</value>
+  </data>
+  <data name="textSendAsAddress.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
+    <value>Fill</value>
+  </data>
+  <data name="textSendAsAddress.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 83</value>
+  </data>
+  <data name="textSendAsAddress.Margin" type="System.Windows.Forms.Padding, System.Windows.Forms">
+    <value>6, 3, 3, 3</value>
+  </data>
+  <data name="textSendAsAddress.Size" type="System.Drawing.Size, System.Drawing">
+    <value>343, 20</value>
+  </data>
+  <data name="textSendAsAddress.TabIndex" type="System.Int32, mscorlib">
+    <value>12</value>
+  </data>
+  <data name="&gt;&gt;textSendAsAddress.Name" xml:space="preserve">
+    <value>textSendAsAddress</value>
+  </data>
+  <data name="&gt;&gt;textSendAsAddress.Type" xml:space="preserve">
+    <value>System.Windows.Forms.TextBox, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </data>
+  <data name="&gt;&gt;textSendAsAddress.Parent" xml:space="preserve">
+    <value>_layoutOptions</value>
+  </data>
+  <data name="&gt;&gt;textSendAsAddress.ZOrder" xml:space="preserve">
+    <value>8</value>
+  </data>
   <data name="_labelReminders.AutoSize" type="System.Boolean, mscorlib">
     <value>True</value>
   </data>
@@ -550,7 +613,7 @@
     <value>Fill</value>
   </data>
   <data name="_labelReminders.Location" type="System.Drawing.Point, System.Drawing">
-    <value>3, 80</value>
+    <value>3, 106</value>
   </data>
   <data name="_labelReminders.Size" type="System.Drawing.Size, System.Drawing">
     <value>90, 27</value>
@@ -574,7 +637,7 @@
     <value>_layoutOptions</value>
   </data>
   <data name="&gt;&gt;_labelReminders.ZOrder" xml:space="preserve">
-    <value>7</value>
+    <value>9</value>
   </data>
   <data name="checkReminders.AutoSize" type="System.Boolean, mscorlib">
     <value>True</value>
@@ -583,7 +646,7 @@
     <value>Left</value>
   </data>
   <data name="checkReminders.Location" type="System.Drawing.Point, System.Drawing">
-    <value>102, 84</value>
+    <value>102, 110</value>
   </data>
   <data name="checkReminders.Margin" type="System.Windows.Forms.Padding, System.Windows.Forms">
     <value>6, 4, 3, 3</value>
@@ -607,7 +670,7 @@
     <value>_layoutOptions</value>
   </data>
   <data name="&gt;&gt;checkReminders.ZOrder" xml:space="preserve">
-    <value>8</value>
+    <value>10</value>
   </data>
   <data name="_labelPermissions.AutoSize" type="System.Boolean, mscorlib">
     <value>True</value>
@@ -616,7 +679,7 @@
     <value>Fill</value>
   </data>
   <data name="_labelPermissions.Location" type="System.Drawing.Point, System.Drawing">
-    <value>3, 107</value>
+    <value>3, 133</value>
   </data>
   <data name="_labelPermissions.Padding" type="System.Windows.Forms.Padding, System.Windows.Forms">
     <value>0, 4, 0, 3</value>
@@ -643,7 +706,7 @@
     <value>_layoutOptions</value>
   </data>
   <data name="&gt;&gt;_labelPermissions.ZOrder" xml:space="preserve">
-    <value>9</value>
+    <value>11</value>
   </data>
   <data name="_labelRestartRequired.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
     <value>Fill</value>
@@ -676,22 +739,22 @@
     <value>_layoutOptions</value>
   </data>
   <data name="&gt;&gt;_labelRestartRequired.ZOrder" xml:space="preserve">
-    <value>10</value>
+    <value>12</value>
   </data>
   <data name="_layoutOptions.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
     <value>Fill</value>
   </data>
   <data name="_layoutOptions.Location" type="System.Drawing.Point, System.Drawing">
-    <value>0, 291</value>
+    <value>0, 265</value>
   </data>
   <data name="_layoutOptions.Margin" type="System.Windows.Forms.Padding, System.Windows.Forms">
     <value>0, 0, 0, 0</value>
   </data>
   <data name="_layoutOptions.RowCount" type="System.Int32, mscorlib">
-    <value>5</value>
+    <value>6</value>
   </data>
   <data name="_layoutOptions.Size" type="System.Drawing.Size, System.Drawing">
-    <value>448, 127</value>
+    <value>448, 153</value>
   </data>
   <data name="_layoutOptions.TabIndex" type="System.Int32, mscorlib">
     <value>2</value>
@@ -709,7 +772,7 @@
     <value>2</value>
   </data>
   <data name="_layoutOptions.LayoutSettings" type="System.Windows.Forms.TableLayoutSettings, System.Windows.Forms">
-    <value>&lt;?xml version="1.0" encoding="utf-16"?&gt;&lt;TableLayoutSettings&gt;&lt;Controls&gt;&lt;Control Name="_labelWholeStore" Row="0" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkWholeStore" Row="0" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="labelPermissionsValue" Row="4" RowSpan="1" Column="1" ColumnSpan="2" /&gt;&lt;Control Name="_labelName" Row="1" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="textName" Row="1" RowSpan="1" Column="1" ColumnSpan="2" /&gt;&lt;Control Name="_labelSendAs" Row="2" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkSendAs" Row="2" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="_labelReminders" Row="3" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkReminders" Row="3" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="_labelPermissions" Row="4" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="_labelRestartRequired" Row="0" RowSpan="1" Column="2" ColumnSpan="1" /&gt;&lt;/Controls&gt;&lt;Columns Styles="AutoSize,0,AutoSize,0,Percent,100" /&gt;&lt;Rows Styles="AutoSize,0,AutoSize,0,AutoSize,0,AutoSize,0,AutoSize,0,Absolute,20" /&gt;&lt;/TableLayoutSettings&gt;</value>
+    <value>&lt;?xml version="1.0" encoding="utf-16"?&gt;&lt;TableLayoutSettings&gt;&lt;Controls&gt;&lt;Control Name="_labelWholeStore" Row="0" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkWholeStore" Row="0" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="labelPermissionsValue" Row="5" RowSpan="1" Column="1" ColumnSpan="2" /&gt;&lt;Control Name="_labelName" Row="1" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="textName" Row="1" RowSpan="1" Column="1" ColumnSpan="2" /&gt;&lt;Control Name="_labelSendAs" Row="2" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkSendAs" Row="2" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="_labelSendAsAddress" Row="3" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="textSendAsAddress" Row="3" RowSpan="1" Column="1" ColumnSpan="2" /&gt;&lt;Control Name="_labelReminders" Row="4" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="checkReminders" Row="4" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;Control Name="_labelPermissions" Row="5" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="_labelRestartRequired" Row="0" RowSpan="1" Column="2" ColumnSpan="1" /&gt;&lt;/Controls&gt;&lt;Columns Styles="AutoSize,0,AutoSize,0,Percent,100" /&gt;&lt;Rows Styles="AutoSize,0,AutoSize,0,AutoSize,0,AutoSize,0,AutoSize,0,AutoSize,0" /&gt;&lt;/TableLayoutSettings&gt;</value>
   </data>
   <data name="_layoutMain.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
     <value>Fill</value>

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/SharedFoldersManager.cs

@@ -47,6 +47,7 @@ namespace Acacia.Features.SharedFolders
         }
 
         public FeatureSharedFolders Feature { get { return _feature; } }
+        public ZPushAccount Account { get { return _account; } }
 
         #region API
 
@@ -57,6 +58,17 @@ namespace Acacia.Features.SharedFolders
         {
             // Make sure reminders are updated as soon as possible
             UpdateReminders(shares);
+
+            // Store the send-as addresses
+            foreach (SharedFolder share in shares)
+            {
+                if (share.CanSendAs)
+                {
+                    _account.SetSendAsAddress(share.BackendId, share.FlagSendAsOwner ? share.SendAsAddress : null);
+                }
+            }
+
+            // Update the shares
             _api.SetCurrentShares(store, shares, cancel);
 
             // Commit changes

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SharedFolders/StoreTreeNode.cs

@@ -43,8 +43,10 @@ namespace Acacia.Features.SharedFolders
         private readonly Dictionary<BackendId, SharedFolder> _currentShares;
 
         private readonly FeatureSharedFolders _feature;
+        private readonly ZPushAccount _account;
         private readonly GABHandler _gab;
         private readonly GABUser _user;
+        private readonly string _sendAsAddress;
 
         public readonly bool IsReadOnly;
 
@@ -61,15 +63,21 @@ namespace Acacia.Features.SharedFolders
             }
         }
 
-        public StoreTreeNode(SharedFoldersManager folders, GABHandler gab, GABUser user, string text, 
+        public StoreTreeNode(SharedFoldersManager folders, GABHandler gab, GABUser user, string sendAsAddress, string text, 
                              Dictionary<BackendId, SharedFolder> currentFolders, bool isShared)
         :
         base(text)
         {
             this._initialShares = currentFolders;
+            // Patch in send as address
+            foreach (SharedFolder share in _initialShares.Values)
+                if (share.SendAsAddress == null)
+                    share.SendAsAddress = sendAsAddress;
             this._feature = folders.Feature;
+            this._account = folders.Account;
             this._gab = gab;
             this._user = user;
+            this._sendAsAddress = sendAsAddress;
             this.IsReadOnly = false;
             this._isShared = isShared;
 
@@ -156,9 +164,16 @@ namespace Acacia.Features.SharedFolders
         {
             SharedFolder share = new SharedFolder(folder, DefaultNameForFolder(folder));
 
-            // Default send as for mail folders
+            // Default send as for mail folders if the address can be determined
-            if (folder.Type.IsMail())
+            string sendAs = _feature.FindSendAsAddress(_account, folder, _sendAsAddress);
-                share = share.WithFlagSendAsOwner(true);
+            if (sendAs != null)
+            {
+                share = share.WithFlagSendAsOwner(true).WithSendAsAddress(sendAs);
+            }
+            else
+            {
+                share = share.WithFlagSendAsOwner(false).WithSendAsAddress(null);
+            }
 
             return share;
         }
@@ -218,6 +233,8 @@ namespace Acacia.Features.SharedFolders
                     if (state.FlagUpdateShareName)
                         state = state.WithName(DefaultNameForFolder(folder));
                 }
+
+                state = state.WithSendAsAddress(_sendAsAddress);
                 return state;
             }
             return null;

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Features/SyncState/FeatureSyncState.cs

@@ -501,7 +501,7 @@ namespace Acacia.Features.SyncState
             // Check the inbox folder
             using (IFolder inbox = account.Account.Store.GetDefaultFolder(DefaultFolder.Inbox))
             {
-                string syncId = (string)inbox.GetProperty(OutlookConstants.PR_ZPUSH_SYNC_ID);
+                string syncId = (string)inbox.GetProperty(OutlookConstants.PR_ZPUSH_BACKEND_ID);
 
                 // If it's syncing, it's not stalled
                 if (syncId != null && syncId != "0")
@@ -515,7 +515,7 @@ namespace Acacia.Features.SyncState
                 _syncStallLastSyncTime = sync.LastSyncTime;
 
                 // Get the sync state
-                string folderId = (string)inbox.GetProperty(OutlookConstants.PR_ZPUSH_FOLDER_ID);
+                string folderId = (string)inbox.GetProperty(OutlookConstants.PR_ZPUSH_SYNC_ID);
                 if (folderId != null)
                 {
 

src/AcaciaZPushPlugin/AcaciaZPushPlugin/OutlookConstants.cs

@@ -139,8 +139,8 @@ namespace Acacia
 
         #region EAS / ZPush
 
-        public const string PR_ZPUSH_SYNC_ID = PROP + "6A18" + PT_STRING8;
+        public const string PR_ZPUSH_BACKEND_ID = PROP + "6A18" + PT_STRING8;
-        public const string PR_ZPUSH_FOLDER_ID = PROP + "6A19" + PT_STRING8;
+        public const string PR_ZPUSH_SYNC_ID = PROP + "6A19" + PT_STRING8;
         public const string PR_ZPUSH_MESSAGE_ID = PROP + "6B20" + PT_STRING8;
         public const string PR_ZPUSH_NAME = PROP + "6915" + PT_UNICODE;
 

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Stubs/IAccount.cs

@@ -74,5 +74,11 @@ namespace Acacia.Stubs
         }
 
         string ShareFor {get;}
+
+        string this[string index]
+        {
+            get;
+            set;
+        }
     }
 }

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Stubs/IFolder.cs

@@ -102,6 +102,7 @@ namespace Acacia.Stubs
 
         ItemType ItemType { get; }
 
+        BackendId BackendId { get; }
         SyncId SyncId { get; }
 
         /// <summary>

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Stubs/OutlookWrappers/AccountWrapper.cs

@@ -158,7 +158,10 @@ namespace Acacia.Stubs.OutlookWrappers
         {
             get
             {
-                return RegistryUtil.GetValueString(_regPath, OutlookConstants.REG_VAL_EAS_DEVICEID, null);
+                string devId = RegistryUtil.GetValueString(_regPath, OutlookConstants.REG_VAL_EAS_DEVICEID, null);
+                if (devId == null)
+                    devId = RegistryUtil.GetValueString(_regPath, OutlookConstants.REG_VAL_EAS_DEVICEID, null);
+                return devId;
             }
         }
 
@@ -292,6 +295,22 @@ namespace Acacia.Stubs.OutlookWrappers
             }
         }
 
+        public string this[string index]
+        {
+            get
+            {
+                return RegistryUtil.GetValueString(_regPath, index, null);
+            }
+
+            set
+            {
+                if (value == null)
+                    RegistryUtil.RemoveValue(_regPath, index);
+                else
+                    RegistryUtil.SetValueString(_regPath, index, value);
+            }
+        }
+
         #endregion
     }
 }

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Stubs/OutlookWrappers/FolderWrapper.cs

@@ -119,8 +119,17 @@ namespace Acacia.Stubs.OutlookWrappers
         {
             get
             {
-                string folderId = (string)GetProperty(OutlookConstants.PR_ZPUSH_FOLDER_ID);
+                string syncId = (string)GetProperty(OutlookConstants.PR_ZPUSH_SYNC_ID);
-                return folderId == null ? null : new SyncId(folderId);
+                return syncId == null ? null : new SyncId(syncId);
+            }
+        }
+
+        public BackendId BackendId
+        {
+            get
+            {
+                string backendId = (string)GetProperty(OutlookConstants.PR_ZPUSH_BACKEND_ID);
+                return backendId == null ? null : new BackendId(backendId);
             }
         }
 

src/AcaciaZPushPlugin/AcaciaZPushPlugin/Utils/RegistryUtil.cs

@@ -45,6 +45,29 @@ namespace Acacia.Utils
             Registry.SetValue(keyPath, valueName, value);
         }
 
+        public static void RemoveValue(string keyPath, string valueName)
+        {
+            using (RegistryKey key = KeyFromPath(keyPath, true))
+            {
+                if (key != null)
+                {
+                    key.DeleteValue(valueName, false);
+                }
+            }
+        }
+
+        private static RegistryKey KeyFromPath(string keyPath, bool writeable)
+        {
+            foreach (RegistryKey baseKey in new RegistryKey[] {Registry.CurrentUser, Registry.LocalMachine })
+            {
+                if (keyPath.StartsWith(baseKey.Name))
+                {
+                    return baseKey.OpenSubKey(keyPath.Substring(baseKey.Name.Length + 1), writeable);
+                }
+            }
+            return null;
+        }
+
         public static string RegToString(object o)
         {
             if (o is byte[])

src/AcaciaZPushPlugin/AcaciaZPushPlugin/ZPush/API/SharedFolders/SharedFolder.cs

@@ -163,7 +163,14 @@ namespace Acacia.ZPush.API.SharedFolders
         {
             SoapData newData = _data;
             newData.flags = flags;
-            return new SharedFolder(newData);
+            SharedFolder clone = new SharedFolder(newData);
+            clone.SendAsAddress = SendAsAddress;
+            return clone;
+        }
+
+        public bool CanSendAs
+        {
+            get { return SyncType.IsMail(); }
         }
 
         public bool FlagSendAsOwner { get { return Flags.HasFlag(ShareFlags.SendAsOwner); } }
@@ -196,6 +203,23 @@ namespace Acacia.ZPush.API.SharedFolders
 
         #endregion
 
+        #region Send as
+
+        public string SendAsAddress
+        {
+            get;
+            set;
+        }
+
+        public SharedFolder WithSendAsAddress(string sendAs)
+        {
+            SharedFolder clone = new SharedFolder(_data);
+            clone.SendAsAddress = sendAs;
+            return clone;
+        }
+
+        #endregion
+
         #region Standard overrides
 
         public override int GetHashCode()
@@ -205,7 +229,17 @@ namespace Acacia.ZPush.API.SharedFolders
 
         override public bool Equals(object o)
         {
-            return o is SharedFolder && _data.Equals(((SharedFolder)o)._data);
+            SharedFolder rhs = o as SharedFolder;
+            if (rhs == null)
+                return false;
+
+            if (!_data.Equals(rhs._data))
+                return false;
+
+            if (!FlagSendAsOwner)
+                return true;
+
+            return Object.Equals(SendAsAddress, rhs.SendAsAddress);
         }
 
         public override string ToString()

src/AcaciaZPushPlugin/AcaciaZPushPlugin/ZPush/ZPushAccount.cs

@@ -284,5 +284,21 @@ namespace Acacia.ZPush
         }
 
         #endregion
+
+        #region Send as
+
+        private const string PREFIX_SEND_AS = "KOE SendAs ";
+
+        public void SetSendAsAddress(BackendId id, string sendAsAddress)
+        {
+            _account[PREFIX_SEND_AS + id.ToString()] = sendAsAddress;
+        }
+
+        public string GetSendAsAddress(BackendId id)
+        {
+            return _account[PREFIX_SEND_AS + id.ToString()];
+        }
+
+        #endregion
     }
 }

src/AcaciaZPushPlugin/AcaciaZPushPlugin/ZPush/ZPushTypes.cs

@@ -118,7 +118,23 @@ namespace Acacia.ZPush
     {
         public static readonly BackendId NONE = new BackendId("0");
 
-        public BackendId(string id) : base(id) { }
+        public BackendId(string id) 
+        : 
+        base(StripSuffix(id))
+        {
+        }
+
+        private static string StripSuffix(string id)
+        {
+            // The backend id is of the format {id}num?. Strip off num if present
+            int index = id.IndexOf('}');
+            if (index >= 0 && index < id.Length)
+            {
+                id = id.Substring(0, index + 1);
+            }
+            return id;
+        }
+
         public BackendId(int id) : base(id) { }
         public BackendId(long id) : base(id.ToString()) { }