Search

Send Unsent Mail Button

Toolbar button to send unsent messages.

Rated 5 out of 5 stars (2)
278 users

Download Now

Webpage Opener

Adds a button to the toolbar to open a user defined webpage.

Rated 5 out of 5 stars (1)
32 users

Download Now

Thunderbird Send

[Alpha Testing] Thunderbird send allows sending and receiving end to end encrypted files.

This add-on is undergoing testing and not yet available to the general public.

Rated 1 out of 5 stars (1)
30 users

Download Now

Antispam

Sending email to the Antispam database

Not yet rated
9 users

Download Now

AutoZoom

AddOn to save a text zoom for eMail text editor.

Rated 4 out of 5 stars (2)
42 users

Download Now

SimpleLogin - Easy Reach

An extension for Thunderbird that allows you to access SimpleLogin.

Not yet rated
3 users

Download Now

Balochi Spellchecker for UniBal Script

This add-on is a Balochi spellchecker based on the UniBal Balochi script.

This is a pre-beta version as the dictionary has 1000+ words and not all Balochi Affix rules are implemented.

Please use it and give your feedback

Rated 3 out of 5 stars (1)
1 user

Download Now

Tatar spellchecker dictionary

Tatar dictionary for spell-checking in Firefox and Thunderbird.

Орфографический словарь Firefox и Thunderbird для проверки правописания татарского языка.

Not yet rated
1 user

Download Now

Eesti keele (et-EE) pakk Thunderbirdile

Estonian (et-EE) language pack for Mozilla Thunderbird 2.0.0.*. Visit homepage for more info...

Not yet rated
0 users

Download Now

Lower Sorbian dictionary

Spellchecking dictionary for Lower Sorbian language.

Not yet rated
7 users

Download Now

Kiswahili Spell Checker

Kiswahili Spell Checker

Not yet rated
49 users

Download Now

Babyish spellchecker

Babyish Spellcheck dictionary

Not yet rated
2 users

Download Now

Flat Folder Tree (updated)

Flat Folder Tree enables you to selectively breakout sub-folders under intermediate folders in the folder pane view. This is an updated version of the existing addon, now compatible with Thunderbird 60.

Rated 3 out of 5 stars (5)
71 users

Download Now

FileLink Provider for Box

Uploads your large attachments to your Box instead of sending them by email.

Rated 3 out of 5 stars (13)
12,065 users

Download Now

Browsing Enhanced ⁵︎  (Hide Caption T Plus)

⦁ Version 5 incoming!!
⦁ NEW! Floating Toolbars & Menus with autohide!
⦁ "Maximize your screen content space by adjusting Tabs, Toolbars, etc!".
⦁ Multiple Configurable Actions for both screen-corner buttons: App/'Home' & Close buttons!

Not yet rated
2 users

Download Now

Owl for Exchange

Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).

Rated 5 out of 5 stars (201)
40,894 users

Download Now

ConfirmBeforeDelete

Ask a confirm before to delete some items

Rated 4 out of 5 stars (20)
402 users

Download Now

Flat Folder Tree Reborn Requires Restart

Flat Folder Tree Reborn is an update of the Flat Folder Tree add-on, which allows you to selectively promote or breakout sub-folders in the folder tree. Use with IMAP servers where some folders remain collapsed under a special namespace like [Gmail].

Rated 5 out of 5 stars (2)
2 users

Download Now

Show Outlook Appointments (vcal / ics) Requires Restart

An extension to show embedded Outlook calendar (vcal / ics) parts.

Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.

Rated 3 out of 5 stars (5)
29 users

Download Now

Toggle Word Wrap Requires Restart

Toggle word wrapping and <PRE> element wrapping in the message composition and HTML display windows, respectively. Based on original version by Kaspar Brand.

Rated 5 out of 5 stars (6)
111 users

Download Now