A free email application from Mozilla that's easy to set up and customize

Thunderbird for Mac
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Thunderbird 148.0

  -  141 MB  -  Open Source
Free Download

Safe & Secure

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Thunderbird 148.0.


For those interested in downloading the most recent release of Thunderbird for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download Thunderbird 148.0
Why is this app published on FileHorse? (More info)

  • Thunderbird 148.0 Screenshots

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    Thunderbird 148.0 Screenshot 1
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  • Thunderbird 148.0 Screenshot 3
  • Thunderbird 148.0 Screenshot 4
  • Thunderbird 148.0 Screenshot 5

What's new in this version:

New:
- Accessiblity is improved in various tree views
- 'Favorites' added as destination for 'Move To' and 'File' buttons
- Add mail.openpgp.load_untested_gpgme_version to load untested GPGME version
- NTLM is exposed as an available authentication method for EWS accounts

Changed:
- Read folders are now removed from Unread Folders view
- Yahoo, AT&T, AOL accounts are switched to PKCE, a more secure auth protocol

Fixed:
- Periodic new mail checks silently stopped after sleep or network outages
- Donation banner stole focus when Thunderbird was running in the background
- Status bar messages displayed unlocalizedd folder names or IMAP mailbox names
- New Folder dialog allowed invalid folder creation without a selected parent folder
- New/unread messages in collapsed thread were not obvious enough
- Invalidly signed unencrypted emails were indicated as worse than unsigned ones
- Untagged messages were not working correctly with quick filter
- Calendar/address book sections were shown in Account Hub when there were none
- Shortcuts could be executed on background mail window while in Account Hub
- Adding a Gmail account prompted for OAuth during auto config
- New password-based Exchange accounts failed to save passwords in login manager
- 'Move Message to' filter action was not logged
- Unknown OAuth providers were not allowed during EWS manual config in AccountHub
- Saved search in unified folder resulted in server error
- EWS password prompt looped endlessly if the password was empty
- Account Hub manual configuration flow for Exchange accounts was incorrect
- Google calendars had broken RSVP logic and wrong organizer on new events
- CalDAV calendars that invited calendar alias did not give all response options
- CalDAV calendar with multiple addresses could crash on multi-attendee invites
- iCal imports misread unknown timezones as GMT, creating events at wrong times
- Visual and UX improvements
- Security fixes

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