Add-ons
Message Composition
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*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
38,474 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.
4,216 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.115,578 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft77,503 users -
Check your emails for spelling and grammar issues74,545 users -
Switch the signature on/off or choose a new one from your predefined set.57,963 users -
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.54,829 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).50,495 users
Top Rated See all »
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Quickly choose one of the previously selected colors for a message text1,937 users -
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。580 users -
Macro Template is to replace mail templates with macros for date formatting.559 users
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Default "Reply" functionality pays attention to "Reply-To" in original email88 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).47,978 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.98 users
Recently Added See all »
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Automatically include attachments in email replies.
Skips SMIME certificates to avoid unnecessary attachments
Fügt automatisch Anhänge aus der ursprünglichen E-Mail hinzu.
Überspringt SMIME-Zertifikate, um unnötige Anhänge zu vermeiden.10 users -
ThunderAI Sparks is an add-on designed to add advanced features to ThunderAI.72 users -
Adds a button to the message composition window which updates recipient addresses to route the outbound message through addy.io or a self-hosted AnonAddy server, so your real, private email address isn't exposed to recipients.14 users -
This plugin lets you store different profiles with CC, To, Subject and Signature values. Perfect if you need to send emails with similar details often.3 users
See all 214 extensions in Message Composition »
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