Message Composition

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FlexConfirmMail

Confirm mail address and attachments based on flexible rules.

(This project was renamed from "Flex Confirm Mail" to "FlexConfirmMail", due to a branding reason.)

Rated 4 out of 5 stars (11)
16,656 users

Check and Send

Check the message contents and addresses before you send the message...

Rated 4 out of 5 stars (49)
18,393 users

ReFwdFormatter

Remove the ">" prefix from quote when you make a reply.

[Source code] https://github.com/isshiki/ReFwdFormatter

Rated 4 out of 5 stars (15)
2,004 users

Recently

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

Not yet rated
67 users

stripImages

Remove all images from message with one click.
Places a "strip images" button on the toolbar of the message compose window.
Clicking the button will remove all images from the message.
This helps keep mailbox disk space down.

Rated 4 out of 5 stars (10)
209 users

hubiC for Filelink Requires Restart

Add hubiC support to Thunderbird's Filelink feature.

Rated 4 out of 5 stars (15)
7 users

MultiTemplateLoader Requires Restart

THIS ADD-ON IS OFFICIALLY ABANDONED
(there will be no more updates, I can't keep up with the changes in Thunderbird).


Manages & applies multiple HTML templates when creating/replying messages.

Rated 5 out of 5 stars (2)
3 users

Notebird

Prendi appunti su tutte le email!

Rated 3 out of 5 stars (1)
106 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)
795 users

Safe Links Cleaner

Clean up the display of links rewritten by Microsoft ATP Safe Links when reading and composing mail, so the original links can easily be viewed and copied, while retaining the rewritten addresses as the actual target of all links.

Rated 4 out of 5 stars (2)
109 users

Email signature for Thunderbird - WiseStamp Requires Restart

Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more

Rated 2 out of 5 stars (8)
12 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
107 users

Patch to Alert Invalid Addresses Requires Restart

Shows alert if there is any invalid address in sending message.

Rated 1 out of 5 stars (1)
4 users

Telefonkonferenz.de-Vorlagen

Durch das Plug-in werden unsere praktischen E-Mail-Vorlagen Ihrer Thunderbird-Symbolleiste hinzugefügt

Not yet rated
0 users

Unicodify – Text transformer

Easily and quickly autocorrect common symbols as ¼, transform text to “Unicode fonts” and change the casing.

Rated 5 out of 5 stars (1)
305 users

BccBlocker Requires Restart

A ThunderBird extension to prevent the use of the Bcc field.

Bcc is the worst thing ever.
It kills transparency inside an organization.
If you use the Bcc feature, you should ask yourself why..

Not yet rated
0 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
23 users

Replaceholder

Replace placeholders with date and time as you type.
入力画面の件名、本文内の各プレースホルダを日時や曜日等の文字列に置換します。

Rated 2 out of 5 stars (1)
10 users

MultiLDAP2 Requires Restart

Based on TrustedBird/MiliMail work. Patched to work with lastest Thunderbird.
Permits to use several LDAP directories simultaneously for address autocompletion.

Rated 5 out of 5 stars (1)
1 user

External Editor Revived

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

Rated 5 out of 5 stars (7)
317 users