Folders and Filters

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Filtered Folder to Favorite

Add filtered folders to favorites. You may lose your favorites. For those with many folders.

Rated 1 out of 5 stars (1)
8 users

Auto-Mark Folder Read

New messages can be automatically marked as read in common folders (e.g. spam, trash, drafts, templates).

Rated 4 out of 5 stars (10)
598 users

SPAM Check for OCN

- SPAM Header Checker for OCN(Japanese Internet Provider)
- This plugin looks at the header of the mail and assigns a "junk mail" mark.
- Only if the header (X-CON-SPAM-CHECK) of the mail is set to 100%, it will be marked as "spam".

Rated 1 out of 5 stars (1)
70 users

AutoBucket

This is an extension function that classifies emails into multiple buckets using AI(the Bayesian filter) and tags them.

Rated 3 out of 5 stars (11)
158 users

YNote Requires Restart

Make some text notable on the each folder in folder's property dialog box.

Rated 5 out of 5 stars (1)
2 users

Tidybird

Organize email into folders quickly and easily.

Rated 4 out of 5 stars (19)
299 users

CapsKiller Requires Restart

Caps Killer is a protection against newbies using caps in their mails.

Rated 5 out of 5 stars (2)
0 users

GTrash

Provides a button and keyboard shortcut (Shift + Alt + Delete by default) to move mail to its account's Trash folder, regardless of normal delete setting. It was developed to improve the experience of using GMail via IMAP.

Not yet rated
138 users

attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Rated 5 out of 5 stars (2)
182 users

QuickFilterPlus

Adds personal filters to quickfilter toolbar

Rated 4 out of 5 stars (1)
1 user

Filter Button

Allows to add a button to the message header view toolbar that shows all filters that match the selected message, including manual and disabled filters. A click on the button allows to select a filter to run.

Rated 4 out of 5 stars (25)
747 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

Disable DragAndDrop (Thunderbird) Requires Restart

A Thunderbird extension which disables drag and drop in the folder pane.
This extension prevents unintended folder movement.

Rated 5 out of 5 stars (19)
88 users

Mark GMail Read

Automatically marks all messages in [Gmail] folder as read.

Rated 5 out of 5 stars (1)
111 users

ShowFolderSize-T Requires Restart

Shows folders size on disk.

This add-on is a fork of ShowFolderSIze.
https://freeshell.de//~kaosmos/index-en.html#foldersize

Rated 5 out of 5 stars (1)
119 users

EuropeanMX Spam Reporter

Train your EuropeanMX filter by reporting unrecognized spam back to us.

Rated 3 out of 5 stars (3)
231 users

Rethread

This addon adds an entry in the right-click menu which re-threads selected messages together (groups selected messages into the same thread)". This is done by _modifying_ messages; the author of the addon declines any responsibility for data loss.

Rated 3 out of 5 stars (5)
0 users

Move Folder (context-menu)

Adds the "Move to" menu entry to the folders panel context menu, allowing to move a Local folder (and its content) to another.
This feature is similar to the native one within message(s) context menu ("Move To"), but it applies to the folder tree.

Rated 3 out of 5 stars (2)
352 users

Expression Search / GMailUI Requires Restart

Powerful message searching through expressions. Type "from:fred to:tom" to see all messages from Fred to Tom in the current view. Support 'regular expressions' and 'click to search'.

Rated 4 out of 5 stars (125)
227 users

Conscious ClickUp Save

Conscious ClickUp Thunderbird add-on is a extension that gives support to send/archive mails from Thunderbird to ClickUp project management platform (https://clickup.com/)
For more info: https://github.com/Ruvin/Conscious-ClickUp-Thunderbird-Plugin

Rated 4 out of 5 stars (2)
62 users