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RM: EXTERNAL:
Requires Restart
Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.
SendToSecondEmail
Requires Restart
This Extension lets you send Mails to both, first and second email address...
Posting Style Enforcer
Requires Restart
Automatically converts top-posted messages to use bottom-positng or vice versa. Interleaved posts are left alone. Detects automatically added text and supports a per-contact list of exceptions.
FastCC
Requires Restart
A Thunderbird extension that let you switch to cc: with the ALT+CTRL+C keyboard shortcut!
PennyPost
Requires Restart
This extension makes it very easy to generate and attach stamps to outgoing mail. It also automatically detects and verifies stamps on incoming emails. The MBound algorithm requires a 16MB fixed table to work, HashCash is more CPU intense.
Synnefo for Filelink
Requires Restart
Add Synnefo support to Thunderbird's Filelink feature.
~okeanos for Filelink
Requires Restart
Add ~okeanos support to Thunderbird's Filelink feature.
Patch to Alert Invalid Addresses
Requires Restart
Shows alert if there is any invalid address in sending message.
Smart Quotes
RemindIt
Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.
nomapi
HtmlHighlightr
Requires Restart
Provides source code highlighting in editor's "Insert HTML" dialog.
ThunderFWD
FDK KIM Plugin
Dieses Plugin setzt automatisch die KIM-Header und den Betreff passend zu ihrem Anhang.
Anhängen werden analysiert und falls genau eine valide p7s Datei erkannt wird, werden die entsprechenden Daten automatisch gesetzt.
✨ Awesome Emoji Picker ✨
Modern, nice emoji picker that you can use to find and select emojis. It will be copied to your clipboard or even directly inserted into the e-mail, when you click on it.
You will certainly like it.
Markdown Here Revival
A revival of the popular Markdown-Here addon for Thunderbird 78 and beyond.
Markdown Here Revival is a Thunderbird extension that lets you write emails in Markdown and render them as HTML before sending.
Typical Reply
Requires Restart
Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.
Toggle Line Wrap
Toggle wrapping of long lines in the message composition window when writing plaintext messages. Wrapping can be controlled via a toolbar button and a keyboard shortcut.
Add contact to CC by mentioning in body with @
Use @ to mention somebody on an email to link and add to the CC.
To create your own collections, you must have a Mozilla Add-ons account.
