Download Mozilla Thunderbird 60.3.1

The Mozilla Foundation has released version 60.3.1 of Thunderbird. Mozilla Thunderbird is an open source email and newsgroup client, with features such as support for several mail and news accounts, a spam filter, spell checker, and a customizable look and feel. The corresponding release notes look like this:

Version 60.3.1 fixed issues

• Double-clicking on a word in the Write window sometimes launched the Advanced Property Editor or Link Properties dialog
• Cookie removal (not working since Thunderbird version 52)
• “Download rest of message” not working if global inbox was used
• Encoding problems for users (especially in Poland) when a file was sent via a folder using “Sent to > Mail recipient” due to a problem in the Thunderbird MAPI interface
• According to RFC 4616 and RFC 5721, passwords containing non-ASCII characters are encoded using UTF-8 which can lead to problems with non-compliant providers, for example office365.com. The SMTP LOGIN and POP3 USER/PASS authentication methods are now using a Latin-1 encoding again to work around this issue.
• Shutdown crash/hang after entering an empty IMAP password

Known Issues

• Under some circumstances Thunderbird on Mac will send attachments using the so-called AppleDouble format which can lead to problems with mail servers and recipients
• CalDav access to some servers not working. Workaround: Set preference network.cookie.same-site.enabled to false.
• Chat: Twitter not working due to API changes at Twitter.com (solution coming)

Version 60.3.0 fixed issues

• Various Theme fixes where incorrect colors, backgrounds, etc. were displayed
• Add-on Options menu not working on Mac
• Shift+PageUp/PageDown in Write window
• Saving content of Write windows didn’t overwrite existing file
• Issues related to “Edit Template” command
• Gloda attachment filtering
• Mailing list address auto-complete enter/return handling
• Thunderbird hung if HTML signature references non-existent image
• Filters not working for headers that appear more than once
• Various security fixes