Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use. Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience.
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.
Changes in Thunderbird 45.4.0:
- Fixed - "Apply columns to..." did not honor special folders
- Fixed - Threading broken when editing message draft, due to loss of Message-ID
- Fixed - Mail saved as template copied In-Reply-To and References from original email.
- Fixed - Additional spaces were inserted when drafts were edited.
- Fixed - Recipient addresses were shown in red despite being inserted from the address book in some circumstances.
- Fixed - Display name was truncated if no separating space before email address.
Download: Thunderbird 45.4.0 for Windows (EN/US) | 33.4 MB (Freeware)
Download: Thunderbird 45.4.0 for Linux (EN/US) | 42.1 MB
Download: Thunderbird 45.4.0 for Mac OS (EN/US) | 73.9 MB
Download: Thunderbird 45.4.0 in other languages
View: Thunderbird Website