New method foldertree.AccountMixin.accountString():

composes the 'label <address>' string which is used in
MyForm.on_action_Send() instead of bare address.

src/bitmessageqt/__init__.py

@@ -2610,7 +2610,10 @@ class MyForm(settingsmixin.SMainWindow):
     def on_action_Send(self):
         """Send message to current selected address"""
         self.click_pushButtonClear()
-        self.ui.lineEditTo.setText(self.getCurrentAccount())
+        account_item = self.getCurrentItem()
+        if not account_item:
+            return
+        self.ui.lineEditTo.setText(account_item.accountString())
         self.ui.tabWidget.setCurrentIndex(
             self.ui.tabWidget.indexOf(self.ui.send)
         )
@@ -3662,11 +3665,8 @@ class MyForm(settingsmixin.SMainWindow):
         if treeWidget is None:
             treeWidget = self.getCurrentTreeWidget()
         if treeWidget:
-            currentItem = treeWidget.currentItem()
-            if currentItem:
-                return currentItem
-        return False
-    
+            return treeWidget.currentItem()
+
     def getCurrentAccount(self, treeWidget=None):
         currentItem = self.getCurrentItem(treeWidget)
         if currentItem:

src/bitmessageqt/foldertree.py

@@ -56,6 +56,14 @@ class AccountMixin(object):
         brush.setStyle(QtCore.Qt.NoBrush)
         return brush
 
+    def accountString(self):
+        """Account string suitable for use in To: field: label <address>"""
+        label = self._getLabel()
+        return (
+            self.address if label == self.address
+            else '%s <%s>' % (label, self.address)
+        )
+
     def setAddress(self, address):
         """Set bitmessage address of the object"""
         if address is None:
@@ -359,6 +367,9 @@ class BMAddressWidget(BMTableWidgetItem, AccountMixin):
     def _setup(self):
         self.setEnabled(True)
 
+    def _getLabel(self):
+        return self.label
+
     def data(self, role):
         """Return object data (QT UI)"""
         if role == QtCore.Qt.ToolTipRole: