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

Thunderbird for Mac

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Download Thunderbird 78.12.0

  -  66.5 MB  -  Open Source

What's new in this version:

Fixed:
- Sending an email containing HTML links with spaces in the URL sometimes resulted in broken links
- Chat account settings did not always save as expected
- RSS feed subscriptions sometimes lost
- Calendar: A parsing error for alarm triggers of type "DURATION" caused sync problems for some users

Various security fixes:
- CVE-2021-29969: IMAP server responses sent by a MITM prior to STARTTLS could be processed
- CVE-2021-29970: Use-after-free in accessibility features of a document
- CVE-2021-30547: Out of bounds write in ANGLE
- CVE-2021-29976: Memory safety bugs fixed in Thunderbird 78.12

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