Up & Coming Extensions

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ConfirmBeforeDelete

Ask a confirm before to delete some items

Rated 4 out of 5 stars (11)
1,176 users

✨ Awesome Emoji Picker ✨

Modern, nice emoji picker that you can use to find and select emojis. It will be copied to your clipboard or even directly inserted into the e-mail, when you click on it.

You will certainly like it.

Rated 5 out of 5 stars (1)
1,465 users

changeQuote

It's an extension that changes the format of reply header.
You can choose between the standard Thunderbird reply header, a detailed reply header or a Customized reply header.
You can configure it in the Tools ->Add-on Preferences -> changeQuote.

Rated 4 out of 5 stars (19)
1,184 users

Header Tools Lite

Allows to modify the header and the source of messages

Rated 4 out of 5 stars (48)
2,710 users

Copy Folder mod Requires Restart

I corresponded to thunderbird 60 or later
Copy Folder

original:
https://addons.thunderbird.net/ja/thunderbird/addon/copy-folder/

Rated 4 out of 5 stars (9)
1,068 users

Google Chat Tab

Open Google Chat in a Thunderbird Tab

Rated 4 out of 5 stars (4)
959 users

G Suite in tab

Now you can open G Suite App in Thunderbird tabs. (Calendar, Contacts, Keep, Task and Drive)

Rated 5 out of 5 stars (6)
1,249 users

ConfirmFolderMove Requires Restart

Introduces a preference that allows users to be prompted before moving folders.

Rated 5 out of 5 stars (21)
1,425 users

SPAMBEE

Report any unsollicited email (SPAM, Phishing, ...) to SPAMBEE.
Get an alert if you open an email containing a URL already known as fraudulent.
All reports are anonymized, no registration is required.

Rated 4 out of 5 stars (4)
1,319 users

Stationery Requires Restart

Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

Rated 4 out of 5 stars (166)
1,903 users

Auto Compress File Requires Restart

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (18)
1,584 users

Expression Search - NG

Powerful message searching:

* Move the search box to save screen.
* Visual search query builder

* Type "f:fred fn:Vortrag" for messages from Fred, attachment name contains 'Vortrag'
* Type "t:(oo -pp)" for messages to oo, but not pp.

Rated 4 out of 5 stars (26)
1,939 users

Grammar and Spell Checker — LanguageTool

Check your emails for spelling and grammar issues

Rated 4 out of 5 stars (21)
26,754 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 (51)
7,527 users

PrintingTools NG

Message Printing Tools (NextGen)

PrintingTools NG provides numerous layout and formatting options for
printing messages with header sorting, attachment lists, borders etc.

Rated 4 out of 5 stars (27)
14,226 users

WarnAttachment

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (8)
2,653 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 (8)
22,460 users

FireTray Requires Restart

A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...

Rated 4 out of 5 stars (289)
1,908 users

Attachment Viewer: Images/Office-files, slideshow

(Pre-) view image and office files in attachments

* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom
* Drag zoomed image to choose the displayed region
* Rotate image
* Flip image
* Download dialog with thumbnail of the image

Rated 5 out of 5 stars (11)
3,322 users

Dictionary for recipient

Sets the spell check dictionary based on the first recipient

Rated 5 out of 5 stars (2)
5,859 users