Add-ons
Message Composition
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*cloud - FileLink for Nextcloud OpenCloud ownCloud
Upload large attachments to your Cloud and send the link by email
39,572 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.
3,685 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.118,887 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft76,387 users -
Check your emails for spelling and grammar issues74,295 users -
Switch the signature on/off or choose a new one from your predefined set.53,771 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).53,283 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.)52,430 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。374 users -
Macro Template is to replace mail templates with macros for date formatting.584 users
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Default "Reply" functionality pays attention to "Reply-To" in original email51 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).38,783 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft76,387 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.90 users
Recently Added See all »
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Attach files from your Nextcloud to an email as real attachments – without saving them to your computer first. Or insert them as share links with optional password and expiry date. Works with any Nextcloud, no server app needed.1 user -
Create and attach calendar invitations directly from Thunderbird's email compose window. Simple meeting scheduling without switching apps.1 user -
Word and character counter for the message you are writing, with social media limits and one-click case changes for the subject and selected text. Works offline.0 users -
Look up flexible workspace prices for a city from the message or compose window. Public CoworkingView Price Index, CC BY 4.0. Sends the city slug to api.coworkingview.com. Does not read messages.0 users -
Translate incoming emails and outgoing replies in Thunderbird with Microsoft or Google. No API keys required.13 users -
Render LaTeX equations locally in Thunderbird, preview them, and insert PNGs. Adjust color, size, and layout; edit equations and save custom macros. Interface: English, French, German, Italian, Spanish, and Greek.3 users
See all 403 extensions in Message Composition »
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