Up & Coming Extensions

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Flex Confirm Mail Requires Restart

Confirm mail address and attachments based on flexible rules.

Rated 1 out of 5 stars (1)
11,867 users

Close Proxy Authentication Requires Restart

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (4)
1,540 users

LDAP Contact Photo Requires Restart

Show contact photo stored in LDAP directory

Rated 5 out of 5 stars (7)
1,557 users

Auto Address Cleaner Requires Restart

Removes comment, display name automatically from addresses before sending mail.

Rated 4 out of 5 stars (51)
18,961 users

LookOut+ Requires Restart

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 4 out of 5 stars (6)
9,268 users

Consigna para Filelink Requires Restart

Plugin para subir ficheros a Consigna (Junta de Andalucía) de forma automática desde Thunderbird.
Está ideado para el intercambio de ficheros de gran tamaño. Es un espacio de almacenamiento temporal y con algunas restricciones de acceso opcionales.

Rated 3 out of 5 stars (2)
1,556 users

Join-NG Requires Restart

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (4)
3,004 users

Check and Send Requires Restart

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

Rated 4 out of 5 stars (31)
24,008 users

Blinking Alert Requires Restart

Adds blink feature to the new-mail alert.
You can also disable auto-hiding of the alert.

Rated 4 out of 5 stars (27)
14,315 users

LookOut (fix version) Requires Restart

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey

Rated 4 out of 5 stars (11)
31,933 users

Check Domain Requires Restart

This extension is to display the warning dialog when you send mail for multiple domains.

Rated 4 out of 5 stars (5)
3,238 users

Winmail Opener Bridge Requires Restart

Opens attached winmail.dat by Winmail Opener automatically.

Not yet rated
1,220 users

Sender Name Requires Restart

Rated 4 out of 5 stars (40)
2,561 users

Multi-LDAP Requires Restart

Permits to use several LDAP directories simultaneously for address autocompletion.

Rated 4 out of 5 stars (12)
1,276 users

Display Quota Requires Restart

This extension will display the current status of your IMAP quota in thunderbird's statusbar and will warn you when you reach a configurable limit...

Rated 4 out of 5 stars (30)
42,326 users

SmartTemplate Requires Restart

This Add-on provides the smart and simple templates and abilities to customize the quote header flexibly.
Templates can be inserted automatically at the new/repling/forwarding message. A different template can be used respectively per account.

Rated 4 out of 5 stars (111)
1,536 users

IMAP Quota (Free Space) Requires Restart

This Thunderbird addon let you customize the behaiour of the IMAP quota statusbar panel.

Rated 5 out of 5 stars (1)
2,976 users

Tag Sequence Arranger Requires Restart

Enable you to arrange the tag sequences in their listbox.

Rated 5 out of 5 stars (4)
3,632 users

Tag Toolbar Requires Restart

Add toolbar for toggling tags.

Rated 4 out of 5 stars (53)
18,832 users

Addressbooks Synchronizer Requires Restart

Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers

Rated 4 out of 5 stars (58)
41,999 users