
Using Thunderbird with multiple language packages caused high RAM and CPU usage and sluggish performance.
Thunderbird got stuck after sending a message with NNTP and SMTP recipients. Printing multiple messages at once was not possible. Forwarding messages with attachments sometimes failed. Thunderbird could not send messages when an IPv6 SMTP server was configured by IP address (instead of hostname). Improved IMAP startup performance for accounts with a large number of folders. Some fixes might address the slow startup of previous Thunderbird versions, also discussed here on the blog. According to the release notes, the update includes the following fixes. Thunderbird tried to refresh disabled and manual-only calendars when the network state changed from offline to onlineĭownload: Thunderbird 91.3.0 for Windows (EN/US) | 64-bit | ~50.0 MB (Open Source)ĭownload: Thunderbird 91.3.0 for Linux (EN/US) | 65.2 MBĭownload: Thunderbird 91.3.0 for Mac OS (EN/US) | 119.0 MBĭownload: Thunderbird 91.3.German blog reader Tom pointed it out here – thanks for that. CardDAV address books without a name did not work. Drag and Drop area for file attachments on Windows was incorrect.
Compose window attachment drag and drop fixes.
Windows tray icon did not reappear after restarting Windows Explorer."Print" context menu was still shown when no message pane was displayed.Mail tabs could not be closed using the context menu.Thunderbird did not send the QUIT command when closing an SMTP connection.Default mail headers were set incorrectly when the value contained a colon (:).Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience. Thunderbird gives you control and ownership over your email. Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. It is a local (rather than a web-based) email application that is powerful yet easy-to-use. Thunderbird is a free, open-source, cross-platform application for managing email and news feeds.