Add-ons
Message Composition
-
*cloud - FileLink for Nextcloud OpenCloud ownCloud
Upload large attachments to your Cloud and send the link by email
37,811 users -
SmartTemplates
SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.
3,721 users
Most Popular See all »
-
True "Send Later" functionality to schedule the time for sending an email.118,628 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft79,317 users -
Check your emails for spelling and grammar issues78,379 users -
Switch the signature on/off or choose a new one from your predefined set.54,798 users -
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.)52,591 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).50,944 users
Top Rated See all »
-
Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
それを実現するためのアドオンです。350 users -
Macro Template is to replace mail templates with macros for date formatting.531 users
-
Default "Reply" functionality pays attention to "Reply-To" in original email51 users
-
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).40,244 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft79,317 users
-
Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.88 users
Recently Added See all »
-
Insert any of 682 accented letters into a message as you write it, from a searchable popup in the compose window. Works offline: nothing is sent anywhere and no data is collected.0 users -
Adds FileSender as a Thunderbird FileLink provider, so large attachments are sent as download links instead of attached directly. Works with any FileSender (https://filesender.org) instance you have an account on.0 users -
Table formatting tools for Thunderbird. Full control over the border, including thickness and border styles (solid, dashed, dotted, or none).0 users
-
Import CSV files to generate personalized email drafts, open compose tabs, or send directly in Mozilla Thunderbird.1 user -
Improve your emails with AI right inside Thunderbird compose window. Supports OpenAI, Google Gemini, Groq, and self-hosted models. Click "Improve Writing" to refine tone, style, and formatting. Customizable prompts and settings. Privacy-friendly.4 users -
An easy visual table editor for Thunderbird's HTML composer, with drag selection, formatting, resizing, headers, templates and saved models.
Provided as-is; the author is not responsible for loss or unintended results.11 users
See all 375 extensions in Message Composition »
To create your own collections, you must have a Mozilla Add-ons account.
