Add-ons
Message Composition
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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.
3,712 users -
*cloud - FileLink for Nextcloud OpenCloud ownCloud
Upload large attachments to your Cloud and send the link by email
38,103 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.1,22,234 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft80,266 users -
Check your emails for spelling and grammar issues79,222 users -
Switch the signature on/off or choose a new one from your predefined set.55,880 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.)55,004 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).51,586 users
Top Rated See all »
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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。393 users -
Macro Template is to replace mail templates with macros for date formatting.577 users
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Default "Reply" functionality pays attention to "Reply-To" in original email53 users
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft80,266 users
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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.89 users
Recently Added See all »
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Save HTML email templates and use them in one click. Start a new message from a template or fill an open draft, and import many .html files or a whole folder at once. Everything stays on your computer.0 users -
Underlines the mistakes a LanguageTool server reports in the compose window. You choose the server, and nothing is ever sent to any other third-party service.2 users -
Adds self-hosted pixel-track tracking pixels to outgoing messages.2 users
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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.1 user -
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.11 users -
Table formatting tools for Thunderbird. Full control over the border, including thickness and border styles (solid, dashed, dotted, or none).4 users
See all 382 extensions in Message Composition »
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