Die Entwickler der in der Nextcloud enthaltenen Mail App, haben die Version 0.17.0 veröffentlicht.

Nextcloud Mail App 0.17.0 Release Notes

Added

• Warning when a message does not have a subject
• Cache mailbox special use as well for faster page loads

Fixed

• SQL error at mailbox initialization
• SQL error at mailbox cache update
• Handling of avatars for invalid e-mail addresses

Changed

• Dependency updates
• New and updated translations

Quelle: https://apps.nextcloud.com/apps/mail/releases?platform=17#17