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Quote Colors & Collapse

Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.

Rated 5 out of 5 stars (15)
4,060 users

Text Insert: Templates/Instant Spell Check

Email composer:

*Upper case the first letter of nouns, names, or words at sentence start
*Android(TM) like spellcheck/suggest alternatives (DE, EN, ES, FR,NL)
*Insert styled text, images, tables with shortcuts
*Define shortcut-replacements.

Rated 3 out of 5 stars (7)
235 users

Toggle Message Pane

Adds a Preview Button, toggles the message preview

Rated 5 out of 5 stars (8)
501 users

quicker quicksearch

make searching for emails faster:

Automatically insert into the quickfilter box: the author, subject or the email domain of the selected email.


No need to retype the address, if you want to search for all emails of this author.

Rated 5 out of 5 stars (7)
1,117 users

ResizeTbWidth

Resize Thunderbird window width.
Set window with three widths (1/1 (1920px), 1/2 (960px), 1/3 (640px)).

July 3rd 2021.

I love God.

Sungho.

Not yet rated
59 users

TileNote

Tile notes, I provide this web app. to Mozilla Thunderbird users.
This is a derivative of RainbowNote, 7 colorful week notes, with tile like shapes.

Not yet rated
44 users

Click Speed Tester

Test your click speed and practice different clicking techniques.

Not yet rated
3 users

archive-by-time

With the filter function comes with thunderbird, all emails met rules will be moved to a specific folder. As time passed the folder would grew bigger and I wanted to put all emails into sub folders classified by year.

Not yet rated
132 users

FileLink provider for Send

Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).

Rated 5 out of 5 stars (17)
42,523 users

Proton Calendar Toolbar Button

Adds a Proton Calendar button to the toolbar. The button simply opens a new tab with the https://calendar.proton.me webpage.

Rated 5 out of 5 stars (8)
692 users

Spellchecker Rumantsch Surmiran

Spellchecker for Rumantsch Surmiran

Not yet rated
16 users

GrapeVine for Salesforce

Connects Thunderbird to Salesforce.com

- Archive Emails from Thunderbird email accounts into Salesforce, automatically
- Synchronise Salesforce Contacts and Leads into Thunderbird's address book
- Create Contacts/Leads in Salesforce from emails

Rated 5 out of 5 stars (1)
15 users

If This, Then! - IFTTT connector

*Trigger 'If This Then That' by message filters.
E.g.: On email with the file attachment xyz.log, send from sampledomain.com,
email body with text 'error 365', trigger action "error365" on IFTTT
IFTTT can push to web services, do home automation

Not yet rated
64 users

Netiquette Checker

An integrated netiquette checker for EPITA students.

List all the netiquette rules that are not respected when writing an email.

Feel free to contirbute to the repository:
- https://github.com/d4ilyrun/netiquette

Not yet rated
4 users

Proton Mail Toolbar Button

Adds a Proton Mail button to the toolbar. The button simply opens a new tab with the https://mail.proton.me webpage.

Rated 5 out of 5 stars (3)
518 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 (3)
138 users

vault56 protection

vault56 protection protects against potentially malicious attached files and links. Links are rewritten to pass through vault56 URL protection servers and checked for trackers and malicious activity.

Rated 5 out of 5 stars (2)
53 users

Spellchecker Rumantsch Sutsilvan

Spellchecker Rumantsch Sutsilvan

Not yet rated
3 users

Google Calendar Tab

Adds a button to open Google Calendar in a new Tab

Rated 4 out of 5 stars (17)
7,664 users

Thunderbird Assist

[Closed Alpha Testing] Thunderbird assist provides a summary of new messages in your inbox.

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

Not yet rated
3 users