Hi @noyes I'm unclear what you mean by 'mail verification in the app'. Would you be kind enough to clarify or give greater context. If your asking about the 15 minute synchronisation internal when the app checks for new mail, this is the lowest value supported. It's a restriction applied by google for the type of background process TBA uses to check for messages. For faster email receipt and notification, you should enable the push service which delivers emails immediately after they arrive on the server. Guide: https://support.mozilla.org/en-US/kb/configure-push-email-thunderbird-android