Newest Extensions


Autofile - fast e-mail to folder filing

Read an e-mail, hit the Autofile button and it is filed / moved to the right mail folder based on the sender's address. No drag/drop needed.

You may tell Autofile or let it discover folders to store each author mail. Will save you lots of time.

Not yet rated
0 users
Added Jan. 14, 2021

Attachment Image Viewer/Slideshow

Viewing images in attachments as full size or thumbnail.

* Show slideshow of attached images
* Zoom image
* Drag zoomed image to choose the displayed region
* Rotate image
* Flip image
* Download dialog: shows a thumbnail of the image

Not yet rated
0 users
Added Jan. 13, 2021


TaskviewLayout has two versions.
One is this TaskviewGridLayout and
another is the existing TaskviewFlexLayout.

TaksviewGridLayout works in Thunderbird version 78.6.0 ~ 86.0a1.

Praise Stephen Kim Sou-hwan.

January 12th 2021.

Not yet rated
0 users
Added Jan. 12, 2021

Hide Local Folders for TB78++

Removes the 'Local Folders' entry from the folder pane.
(The folder itself will stay existent.)
(Based on the original work of Alex Cabal.)

Rated 5 out of 5 stars (1)
8 users
Added Jan. 4, 2021

Telegram Web in Thunderbird

Once the add-on is installed, a new icon appears in Thunderbird Mail toolbar. Click on it to open the Telegram Web tab.

Not yet rated
6 users
Added Jan. 3, 2021

Toggle Summary

Adds a Toggle Summary button

Not yet rated
2 users
Added Dec. 28, 2020

Toggle Inline

Adds a Toggle Inline button

Not yet rated
2 users
Added Dec. 28, 2020

Toggle HTML

Adds a Toggle HTML button

Not yet rated
3 users
Added Dec. 28, 2020

Select Prev on Delete

Selection of the previous message (instead of next message - default behavior) when deleting (only for Thunderbird 78 or above).

Not yet rated
2 users
Added Dec. 27, 2020

Just Report It

Just Report It ( is an email plugin which makes it easy to report spam emails back to the domain registrar. This method ensures that spam domains are effectively being blocked at the registrar level and not just locally.

Not yet rated
30 users
Added Dec. 17, 2020

Add contact to CC by mentioning in body with @

Use @ to mention somebody on an email to link and add to the CC.

Not yet rated
19 users
Added Dec. 14, 2020


Adds a column to the Thunderbird message list to always display the true attachment count. An icon is shown for single attachments or all attachments deleted/detached. Tooltip preview of single attachment content and summary for multiple attachments.

Rated 5 out of 5 stars (1)
68 users
Added Dec. 14, 2020

Monterail Darkness Extended

Monterail Dark, a Thunderbird theme inspired by the mockup of Monterail extended to Calendar, Tasks and Composer. Some more tweaks to normalize heights of the tabs and other options.

Rated 5 out of 5 stars (2)
66 users
Added Dec. 13, 2020


1) Add Find Task button like Find Events button.
2) Add tasks filter menu list.
3) Add the menu list filtering tasks by priority.

Hi, Mom.
I pray for my and your mother's good health.

From a middle-age son.

Not yet rated
7 users
Added Dec. 10, 2020




Not yet rated
0 users
Added Dec. 6, 2020

Larger Message List

Enlarges the display of the message list, and the folder tree view too

Rated 5 out of 5 stars (2)
65 users
Added Dec. 4, 2020


Replace placeholders with date and time as you type.

Rated 2 out of 5 stars (1)
4 users
Added Dec. 3, 2020


Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (11)
455 users
Added Nov. 30, 2020

Search for

Context menu on message allowing quick filtering based on email/sender or domain

Rated 5 out of 5 stars (2)
81 users
Added Nov. 27, 2020


Fixes smileys that show in emails created by Outlook as J.

Not yet rated
100 users
Added Nov. 26, 2020