Message Composition

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Smart Quotes

Enables “Smart” Quotes for Thunderbird Email

Rated 5 out of 5 stars (2)
101 users

HtmlHighlightr

Provides source code highlighting in editor's "Insert HTML" dialog.

Rated 5 out of 5 stars (1)
94 users

Russian spell check

Select a text in Russian appearing on any web page and get a spelling check for it immediately!

Rated 4 out of 5 stars (4)
90 users

MultiLDAP2

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

Not yet rated
88 users

Lovebird

Email organized around the people you care about.

Rated 3 out of 5 stars (3)
80 users

Patch to Alert Invalid Addresses

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

Rated 1 out of 5 stars (1)
78 users

~okeanos for Filelink

Add ~okeanos support to Thunderbird's Filelink feature.

Not yet rated
65 users

forcebutton

This add-on can resend mails, so you "force" the other side to answer. It could be useful at corporate environment.

Rated 2 out of 5 stars (1)
55 users

Posting Style Enforcer

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.

Rated 5 out of 5 stars (3)
54 users

CodeHighlight

highlight code in email.

Rated 3 out of 5 stars (1)
45 users

Inbox Cleaner of expired Emails

Moves expired Emails out of your Inbox!

Not yet rated
41 users

Ethical signature

Add a button to the email composition toolbar, which lets you insert an ethical signature.

Not yet rated
34 users

X-Unsent support

Adds support for the X-Unsent header.

Rated 5 out of 5 stars (1)
28 users

PennyPost

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.

Rated 5 out of 5 stars (2)
25 users

Don't Send Linked Files

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

Rated 1 out of 5 stars (1)
19 users

SendToSecondEmail

This Extension lets you send Mails to both, first and second email address...

Not yet rated
17 users

Kmaleon Extension

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

Not yet rated
16 users

Resubmit

Re-submit messages received from users to a predefined recipient(s)

Not yet rated
15 users

QFO - Quick Fuck Off

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

Rated 3 out of 5 stars (2)
14 users

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
11 users