Thunderbird for Mac
Email client from Mozilla.
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Thunderbird overview
As of July 2012, Thunderbird has transitioned to a new governance model, with new features being developed by the broader free software and open source community, and security fixes and improvements handled by Mozilla.
Thunderbird is a free, open-source, cross-platform e-mail and news (NNTP) client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a Web browser.
What's new in version 156.0
New:
- OpenPGP key properties can print debug information to the Error Console
- External browser login flow enabled for Yandex
- Custom OAuth support for issuer ID and client secret field for IMAP and POP3
- Custom OAuth support for POP3
- Enterprise policy DisableUpdateSettings prevents users from changing update settings.
- Enterprise policy DisableDataCollectionSettings prevents users from changing data collection setting.
- Enterprise policy DisableMessageForwardingFilters prevents message filters from automatically forwarding messages.
Changed:
- Preference mail.offer_experimental_features renamed to mail.experimental_features_settings.enabled
- Thundermail built-in add-on updated to v2.0.11
Fixed:
Thunderbird for Mac
Free
In English
Version 156.0
What users say about Thunderbird
Features: 2.0
It does really feel like a web browser, which I feel a mail client isn't. I have to turn to terminal to get proper logging of connections. When exporting messages for archives there exist no solution that guarantees all messages and attachments make it even when all are on disk. What's that?
Reliability: 2.0
I don't feel I know what it's doing and I''ve been an email user for 30 years and ain't no newbie in setting up and analysing mail servers nor setting them up myself.
Other user ratings:
Value | 3.0
Ease of use | 2.0
Customer support | 3.0
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(361 Reviews of Thunderbird)
Comments
User Ratings
Apr 9, 2026
Version: 149.0.2
Mozilla Thunderbird's official site still lists 149.0.1 as the official version. ??
Mar 12, 2026
Version: 148.0.1
The New version of Thunderbird is 140.8.1esr (64-bit), and the latest version of Firefox is 148.0.2 (64-bit). For some reason, Thunderbird shows Firefox's version number here.
Sep 14, 2024
Version: 128.2.0
This "new" version was actually released a few weeks ago. Why is MacUpdate posting this now?
Nov 11, 2023
Version: 115.3.2
Using a Mac, one on Catalina, the other on System 14 on an M1 chip. Can't get either one to work. Whan I enter my *correct* user ID and password to tell it to use iCloud, it comes back saying that my credentials aren't accepted. One commenter on another forum said to erase the account and restart TB. How does one erase an account? Another commented that one should delect ~/.thunderbird. There isn't one on either of my machines. I really want to replace Mail. Won't you please help?
Jul 22, 2023
Version: 115.0
Has the fixed compose window issue been fixed for V115.0? Any other comments to share?
