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Hungarian Dictionary
Český slovník pro kontrolu pravopisu
Slovník pro kontrolu pravopisu pro aplikace Mozilla
German Dictionary, extended for Austria
German dictionary (new Orthography) for spellchecking in Mozilla products, extended with Austrian words
German Dictionary (Switzerland)
Dictionary with Swiss variants of German words for spellchecking in Mozilla products
AutoarchiveReloaded
Featured
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)
FlexConfirmMail
Confirm mail address and attachments based on flexible rules.
(This project was renamed from "Flex Confirm Mail" to "FlexConfirmMail", due to a branding reason.)
Grammalecte [fr] (for Thunderbird)
French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.
Allow HTML Temp
Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).
G-Hub Lite
Google Tabs for Thunderbird! G-Hub Lite supports Calendar, Contacts, Drive, Docs, Sheets, Slides, Maps, Search, & Voice. Need Google Workspace support (formerly G Suite)? Check out G-Hub Pro: https://www.schiffner.com/index.php/software/g-hub-pro
CategoryManager
Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).
CardDAV Browser
A utility to browse vCards stored on a CardDAV server.
This version is only for Thunderbird. There is a SeaMonkey version available if needed.
Edit Email Subject (EES)
Xpunge
Empties the Trash and Junk folders, and compacts folders in multiple Thunderbird accounts.
ReplyWithHeader
Google Keep Tab
Quick Folder Move
When filing messages, a search box will show up allowing you to quickly enter the folder name you want to move to.
If no search term is entered, a list of recent folders will show up instead.
Identity Chooser
Identity Chooser helps you to always use the correct identity when composing a new email.
TexTraTo create your own collections, you must have a Mozilla Add-ons account.
