Up & Coming Extensions

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List Addons in Windows' Programs

List addons in Windows' "Add or Remove Programs".

Not yet rated
1,786 users

DevPrefs

Automatically sets all preferences for Firefox addon developer production environment.

Not yet rated
1,302 users

Keep in Taskbar Requires Restart

A simple plugin that makes the Close button behave exactly like the Minimize one.

Rated 5 out of 5 stars (3)
1,816 users

TbSync (Provider for Exchange ActiveSync) Requires Restart

Synchronize Exchange ActiveSync accounts to Thunderbird Addressbook and Calendar, supports Office 365, Outlook.com, Freenet, Strato, Hotmail, Kopano and other EAS compatible servers.

Rated 5 out of 5 stars (8)
1,716 users

Report Spam Requires Restart

Report spam is a Thunderbird plugging to report antispam errors. A new button is added to header tool bar in order to signal a message as a false positive (a ham that is tagged as spam) or a false negative (a spam not tagged as spam).

Rated 3 out of 5 stars (11)
2,044 users

Signal Spam Requires Restart

Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).

Rated 3 out of 5 stars (36)
9,347 users

TORPEDO - TOoltip-poweRed Phishing Email DetectiOn Requires Restart

TORPEDO ist ein Tool zum Erkennen von betrügerischen Links (Phishing). Bewegen Sie die Maus über einen Link in einer Email. TORPEDO zeigt Ihnen die tatsächliche Webadresse in einem Tooltip an und hilft Ihnen, diese zu untersuchen.

Rated 4 out of 5 stars (4)
1,114 users

Grammalecte [fr] (for Thunderbird) Requires Restart

French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.

Rated 5 out of 5 stars (3)
2,406 users

CardBook Requires Restart Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon
Forum: https://cardbook.6660.eu/

Rated 4 out of 5 stars (128)
19,852 users

Copiar Assunto Requires Restart

Adiciona um botão para copiar o Assunto do email selecionado para a área de transferência

Add a button to copy the Subject line of the selected email to the clipboard

Not yet rated
1 user

Theme Font & Size Changer for TB

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Not yet rated
198 users

osu! Beatmap Accelerator Compatible with Firefox 57+

Accelerate download osu!beatmap(need to pay).

Not yet rated
3 users

Jalali Date Format Requires Restart

Convert Date/Received column to Jalali (Persian Date).

* Adds a column in the mail view for displaying Iranian dates for each email.
* Supports both English and Persian Iranian Date.

more info contact N3tD3vil@Yahoo.com

Rated 5 out of 5 stars (1)
4 users

Classic Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Not yet rated
486 users

GmailOutOfOffice Requires Restart

Out of Office for Gmail

This add-on allows you to set an out of office auto-responder in your gmail account. It adds a button in the toolbar customization list.

Not yet rated
67 users

Remote Content By Folder

Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.

Not yet rated
16 users

ansitel Click-to-Dial MT Requires Restart

Dieses Plugin ermöglicht das Wählen von markierten Rufnummern im Mozilla Thunderbird mit ansitel VoIP-Telefonanlagen. Einfach Rufnummer markieren und per Rechtsklick mit der Maus loswählen.

Not yet rated
6 users

Stop Ignoring Reply:To Requires Restart

Default "Reply" functionality pays attention to "Reply-To" in original email

Rated 5 out of 5 stars (4)
87 users

ToggleReplied Requires Restart

Enables toggling of replied, forwarded, and redirected states of messages.

Rated 4 out of 5 stars (2)
51 users

Rescue Conflicting Alternatives Requires Restart

Converts a mail with conflicting alternative bodes to regular multipart mail.

Not yet rated
21 users