Activated contact service for Gmail to retrieve profile picture and sender name.

Wino.Core/Synchronizers/ImapSynchronizer.cs

@@ -405,7 +405,7 @@ namespace Wino.Core.Synchronizers
             ];
         }
 
-        public override async Task<SynchronizationResult> SynchronizeInternalAsync(SynchronizationOptions options, CancellationToken cancellationToken = default)
+        protected override async Task<SynchronizationResult> SynchronizeInternalAsync(SynchronizationOptions options, CancellationToken cancellationToken = default)
         {
             var downloadedMessageIds = new List<string>();