What can I do if Mailbutler disappears every time I restart my Mac?

Do you have to reinstall Mailbutler on macOS 14 Sonoma or later every time you restart or log into your Mac? Due to unknown reasons, macOS may unexpectedly stop launching Mailbutler automatically when you start up your Mac. This article explains how to resolve this issue.

Last updated on 04 Feb, 2026

1. Open System Settings and navigate to General -> Login Items.

2. Scroll down to find the applications listed under "Allow in the Background" and look for an entry named "Mailbutler GmbH".

3. If the switch was turned off, please turn it on and the issue should be resolved.

4. If the switch was already turned on, please turn it off and on again, then restart your Mac to see if the issue was resolved. If the issue unexpectedly persists, please contact our support.

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