Add alias support

lib/controllers/mail_client_controller.dart

@@ -25,17 +25,20 @@ class MailClientController extends AsyncNotifier<MailClient> {
     required String plainText,
     required String markdown,
     required String subject,
-    required MailAddress from,
     required MailAddress to,
   }) async {
     final client = await future;
+    final settings = ref.watch(SettingsController.provider)!;
+
     return await client.sendMessageBuilder(
       MessageBuilder.prepareMultipartAlternativeMessage(
           plainText: plainText,
           htmlText: markdownToHtml(markdown),
         )
         ..subject = subject
-        ..from = [from]
+        ..from = [
+          MailAddress(settings.mailName, settings.emailAlias ?? settings.email),
+        ]
         ..to = [to],
     );
   }