Say who holds a contested mailbox, and that aliases are free

Shipped

26 ஆகஸ்ட், 2026 அன்று 8:35 PM UTC

Author

kamo

Commit

2e13580

The snackbar replaced the server's 409 message with a generic failure, so a manager could not tell which member held the mailbox. Adds the note that sharing a mailbox costs nothing extra and that aliases are unlimited.