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
39,259 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.
3,944 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.122,496 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft80,731 users -
Check your emails for spelling and grammar issues78,950 users -
Switch the signature on/off or choose a new one from your predefined set.58,524 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.)54,188 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).52,147 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。453 users -
Macro Template is to replace mail templates with macros for date formatting.633 users
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Default "Reply" functionality pays attention to "Reply-To" in original email50 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).41,397 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft80,731 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.92 users
Recently Added See all »
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Shows a Roam external activity while a Thunderbird email compose window is open.0 users -
Automatically adds a custom tag to the subject line when forwarding emails based on the original sender.0 users -
Prepare recurring emails as complete workflows directly above the message body.1 user -
Zeigt die zentral verwaltete E-Mail-Signatur schon beim Schreiben, statt sie erst beim Versand zu ergänzen. Erfordert ein Konto beim Signaturdienst SignatureHub.1 user -
Summarize, draft replies, chat with, and triage selected email through OpenAI, Claude, Mistral, DeepSeek, or your compatible endpoint. No mail is sent unless you start an AI action.4 users
See all 364 extensions in Message Composition »
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