Thunderbird 45.0

Thunderbird

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.

Tabbed email
An Archive feature similar to the one in GMail
Lightning fast search
Smart folders

What's new in this version:

Add a Correspondents column combining Sender and Recipient
Much better support for XMPP chatrooms and commands.
Remote content exceptions: Improved options to add exceptions.
Implement option to always use HTML formatting to prevent unexpected format loss when converting messages to plain text.
Use OpenStreetmap for maps (even allow the user to choose from list of map services)
Allow spell checking and dictionary selection in the subject line
Allow editing of From when composing a message.
Add dropdown in compose to allow specific setting of font size.
Return/Enter in composer will now insert a new paragraph by default (shift-Enter will insert a line break)
Allow copying of name and email address from the message header of an email
Mail.ru supports OAuth authentication.

What's fixed in v45.0:

When sending e-mail which was composed using Chinese, Japanese or Korean characters, unwanted extra spaces were inserted within the text.
Spell checker checked spelling in invisible HTML parts of the message.
When saving a draft that is edited as new message, original draft was overwritten.
External images not displayed in reply/forward
Crashed in some cases while parsing IMAP messages.
Properly preserve pre-formatted blocks in message replies.
Copy/paste from a plain text editor lost white-space (multiple spaces/blanks, tabs, newlines)
"Open Draft"/"Forward"/"Edit As New"/"Reply" created message composition with incorrect character encoding.
Grouped By view sort direction change was broken, plus enabled custom column grouping.
New emails into a mailbox did not adhere to sort order by received.
Box.com attachments failed to upload.
Drag and drop of multiple attachments failed to OS file folder.
XMPP had connection problems for users with large rosters