Message and News Reading
Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.
AttachmentExtractor Continued Requires Restart
This add-on is a (work in progress) fixed version of the original Add-on "AttachmentExtractor" which is no longer supported and fixed by the original author.
It Extracts all attachments from selected messages and then can delete, detach...
Adds a Preview Button, toggles the message preview
Adds some toolbar buttons using phoenity icons.
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
Lets you associate user accounts and identities with specific folders. Great for multiple users who share TB, or for managing mailing lists.
HERA helps hotels to semi or fully automatically respond to emails by checking rates in your PMS / CRS
Thunderbird Conversations Featured
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
Shortcuts to move/copy/archive messages, with folder name completion.
Set rules for moving messages to associated folders.
Automatic rules by statistical observation.
View images inside TB without external viewer.
For v2.3/TB 78.11 see below
Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).
The add-on provides a combined Get and Send button with a context menu with additional features.
You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)
Follow up for Thunderbird E-Mails.
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
Automatically select the Inbox folder at startup.
Limits displayed headers to 1 or 2 lines.
Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
Adds a custom column for Sender Frequency to the thread pane
Seams provides some integration with Patchwork, the patch tracking system. It makes the patch state visible directly from Thunderbird. It also displays useful links to a Patchwork instance or to mail archives, and commands to apply the patch locally.