Message Composition

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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.

Not yet rated
0 users

Single Domain

Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.

Rated 5 out of 5 stars (4)
98 users

One-Click Forward

Forward emails directly through a dropdown of predefined recipients.

Configure recipients in settings. Use the message toolbar button "Quick Forward" to open a dropdown with your recipients and forward directly, or hold Shift to edit first.

Rated 5 out of 5 stars (1)
86 users

MALA Hindi Spell Checker by MCRPV, (Anurag Seetha) Requires Restart

MALA (Makhanlal) Hindi Shabd Shodhak to check Spelling of Hindi Unicode Text by Makhanlal Chaturvedi National University of Journalism & Communication, Bhopal, India. Chief Developer - Dr. Anurag Seetha. The program is Released Under the GNU GPL V 3

Not yet rated
0 users

@Contact Mention

This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.

Rated 4 out of 5 stars (8)
690 users

Lovebird Requires Restart

Email organized around the people you care about.

Rated 3 out of 5 stars (3)
0 users

TarotSignature Requires Restart

This version provides a custom button for the message composer.
You need to customize your toolbar of the message composer.
The signature is hard-coded into the source code.
The signature is NOT being inserted automatically on window-open.

Not yet rated
0 users

MEGAbird Requires Restart

Add MEGA support to Thunderbird's Filelink feature.

Rated 4 out of 5 stars (42)
58 users

Send Later Button

The Send Later Button extension enhances Thunderbird by enabling 'Send Later' even in online mode. It supports many Languages, ensuring a seamless user experience.

See: https://github.com/That-Developer-Guy/Send-Later-Button-Thunderbird/

Rated 1 out of 5 stars (1)
830 users

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

Not yet rated
117 users

Toggle Address Box

Adds a Address Box button, toggles the Address Box in the Composer window

Not yet rated
76 users

Don't Send Linked Files Requires Restart

Prevents sending of linked files if they are file: URLs.

Rated 1 out of 5 stars (1)
0 users

Recently

Recently is a small Mozilla Thunderbird extension for having the most recent contacts at hand

Not yet rated
75 users

SMTP Switch Reborn Requires Restart

SMTP Chooser.

Rated 4 out of 5 stars (7)
25 users

AFP protocol enabler

Enable afp protocol (afp://)

Not yet rated
1 user

CodeHighlight Requires Restart

highlight code in email.

Rated 3 out of 5 stars (1)
4 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
24 users

Strip inline images

Adds a button to the compose window to remove inline images from messages. The images are replaced with their filename in angled brackets.

This is helpful when replying to long message threads with lots of embedded images.

Rated 5 out of 5 stars (2)
124 users

Kmaleon Extension Requires Restart

Con esta extensión podrás hacer una copia de tus emails en el programa kmaleon.

Not yet rated
12 users

External Editor Revived

Edit emails in external editors such as Vim, Neovim, Emacs, etc.

Rated 5 out of 5 stars (7)
331 users