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Mozilla Thunderbird: Macintosh Download for Personally Owned Computers

Open source, cross-platform email, news and chat client program developed by the Mozilla Foundation.

Note: This software can be downloaded multiple times and does not limit the number of downloads.


Mozilla Thunderbird may be downloaded by students (UBmail Powered by Google), as well as retirees (Central Email only).

Unidentified Developer Error?

See how to fix the "Unidentified Developer" error when installing.

Configure Thunderbird

Additional Information

Contact the UBIT Help Center

Have a UBITName? You may also use the UBIT Help Center Online (login required).

(xxx) xxx-xxxx
Use your email, if known