Quick answer
Removing a mailbox from Thunderbird removes that client configuration. Preserve local-only mail before confirming any option that also deletes message data.
Applies to
For an existing mailbox you are authorized to use in Thunderbird. For Interactive Online hosted mail, copy the exact secure settings from Email Accounts > Connect Devices. Account Hub and older Account Settings setup flows differ by Thunderbird version.
Steps
- Export or back up required local folders and confirm which messages remain on the server.
- Open Account Settings, select the exact account and use Account Actions > Remove Account or its current equivalent.
- Read the options concerning local message data before confirming. Removing the client entry is different from deleting the cPanel mailbox.
Check the result
Check that only the intended client account was removed and that required server mail remains accessible in webmail.
Troubleshooting and support
If local mail is the only copy, verify its recovery before removal. Do not delete the server mailbox as a shortcut for fixing Thunderbird.
If the problem continues, contact support from the account that owns the service. Include the domain, exact error, time and time zone, tool name, and a redacted screenshot. Keep passwords, private keys, cookies and private message content out of the ticket.
Video tutorial
The original video is preserved. Its interface or product version may differ from the written guidance above.
Related help
Official references
Written content reviewed November 1, 2026. Menu availability depends on the product version, permissions and service.
