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

Thunderbird for Mac

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Download Thunderbird 38.1.0

Thunderbird 38.1.0

  -  66.76 MB  -  Open Source

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 38.1.0.


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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  • Thunderbird 38.1.0 Screenshots

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What's new in this version:

Bug Fixes:
- Copy/Paste into plain text editor deletes newlines from quoted text (bug 1143570)
- Cross-posts won't send because Newsgroups: groups are separated with comma+space, not just comma (bug 1151448)
- Cannot send email through exchange server (NTLM) (bug 1174159)
- Doesn't display GB2312 encoded texts correctly for Chinese Characters (bug 1174580)
- OAuth2 authentication for GMail does not work when specified server is imap.gmail.com or smtp.gmail.com. (bug 1176773)

Security fixes:
- 2015-71 NSS incorrectly permits skipping of ServerKeyExchange
- 2015-70 NSS accepts export-length DHE keys with regular DHE cipher suites
- 2015-67 Key pinning is ignored when overridable errors are encountered
- 2015-66 Vulnerabilities found through code inspection
- 2015-63 Use-after-free in Content Policy due to microtask execution error
- 2015-59 Miscellaneous memory safety hazards (rv:39.0 / rv:31.8 / rv:38.1)

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