Message Composition
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Custom Sender Address and Reply Requires Restart
Select sender mail address based on the recipient and reply with the same address
CustomCSS
Allow the user to configure custom CSS that will be added to messages when edited
(new, reply and forward). The custom CSS will be added to a newly created <style>
element in the email's head.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
Don't Send Linked Files Requires Restart
Prevents sending of linked files if they are file: URLs.
DS-BCC
Data protection extension, to avoid data mishaps with circular mails:
1. warning for e-mail with multiple recipients not in BCC (exceptions possible)
2. warning for roundmails with a different recipient domain
3. warning if PGP key is present
EasyRight2Left Requires Restart
Change direction from Left to Right and Right to Left for Persian, Arabic, Hebrew etc. This Thunderbird extension is based on ComposeRTF available in https://addons.thunderbird.net/en-US/thunderbird/addon/composertf/
Edit Message Encoding Fallback Requires Restart
Fallback to a safe encoding, if you are replying to a message with unsupported encoding like UTF-16LE. (workaround for the Bug 961983)
Email signature for Thunderbird - WiseStamp Requires Restart
Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more
EML-Editor
Addons to edit EML files and save your emails as EML file with their attachements.
Available on Github with MIT Licence :
https://github.com/pgpgeek/thunderbird-addon-eml-editor
Emoji
It permits just with a single click to copy an emoji.
There is a search-box and the "Most used emojis" section (the first one).
If you want to send feedback or report bug, please go to https://github.com/Sav22999/emoji
Emoji Menu Requires Restart
Adds the ability to easily insert emojis into your composed messages in Thunderbird.
EnForward
Save your email into Evernote by forwarding it to Evernote email address.
Before you use it, you need to specify your Evernote email address (see the screenshot).
This function can be invoked by "Forward to Evernote" in the context menu.
Estimez votre CO₂
Estimez votre CO₂ quand vous rédigez un courriel en un simple clic ! Pendant sa rédaction, cliquez sur l'extension afin de connaître l'émission de CO₂e générée par l'ensemble du cycle de vie. Vous aurez aussi accès à différentes équivalences utiles.
Ethical signature Requires Restart
Add a button to the email composition toolbar, which lets you insert an ethical signature.
Expand mailing lists
Adds an 'expand lists' button to the compose window. It replaces all mailing lists with their contacts.
To create your own collections, you must have a Mozilla Add-ons account.