Thunderbird is a desktop mail client. It's a companion product to Mozilla Firefox. Besides standard email, it supports newsgroups, feed reading, and chat protocols (XMPP, IRC and Twitter), all with multiple identities or accounts. Through Mozilla Lighning or other plugins it's extensible into a full personal information manager. Out of the box it supports SMTP, POP3, IMAP, SSL/TLS, S/MIME, LDAP, RSS/Atom, and searching, filtering or grouping, labels, virtual folders, and comes with a spam filter.
45.2.006 Jul 2016 03:15
Invitations to events could not be printed. Dragging and dropping of contacts from the contact list onto an addressbook while All Addressbooks is selected moved only one contact, Falsely reported not enough disk space during compacting, Links were not always detected properly in the message body (terminated early on " ", some long links not detected at all)
45.1.131 May 2016 06:45
When entering members into a mailing list, the enter key dismissed the panel instead of just moving onto the next line, Email without HTML elements was sent as HTML, despite "Delivery Format: Auto-detect" option, Options applied to a template were lost when the template was used. Contacts could not be deleted when they were found through a search, Views from global searches did not respect "mail.threadpane.use_correspondents"
45.1.012 May 2016 03:15
Drag amp; Drop a contact name from Thunderbird address book (list view) to address box in a new message compose window failed. UI elements became larger when moused over on retina displays/monitor on Mac OS X, DIGEST-MD5 authentication in JS-XMPP failed for some users (now disabled). Font indicator in compose falsely claimed certain fonts were not installed. Printing failed in composition window. Various improvements in handling of message compose in paragraph mode. Automatic correspondents column upgrade disabled
45.017 Apr 2016 18:19
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.