Add-ons
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.122,589 users -
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)23,204 users -
Displays tabs which allows quick navigation between time periods in Lightning calendar. All views of calendar are supported. Color of tab texts can be adjusted.21,195 users -
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.16,141 users -
This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.10,332 users -
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync9,852 users
Top Rated See all »
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Macro Template is to replace mail templates with macros for date formatting.542 users -
True "Send Later" functionality to schedule the time for sending an email.122,589 users
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Integrates calendars events with Gnome clock applet473 users
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Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.37 users
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TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.16,141 users
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This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.10,332 users
Recently Added See all »
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Microsoft 365 / Teams calendar integration for Thunderbird with Microsoft Graph, OAuth2/PKCE and the M365 Space, without the native-calendar Experiment API.0 users
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Point Feed Sentry at any link and it tells you whether the page serves a real RSS or Atom feed, what kind, and how many items it lists right now. A quick way to find a site's followable feeds before you subscribe.0 users
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Vos convocations, questionnaires et attestations Qualiopi rédigés en un clic depuis LogiSign, l'envoi groupé à tous vos apprenants, le suivi Qualiopi, vos salles de visioconférence et vos séances ajoutées à votre agenda : sans quitter Thunderbird.1 user -
Outlook and Teams meeting invitations show up in Thunderbird with no attachment, so there's no way to get them into your calendar. This add-on adds a button that opens them in your calendar app — or right-click it to save the .ics file instead.4 users -
Private notes and todos for every site, domain, or exact page path.9 users
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Quickly and easily schedule a Google Meet invite and Google Calendar event directly from Thunderbird.
Right-click any email to open the scheduler — attendees, timezone, and agenda are pre-filled automatically from the message.90 users
See all 94 extensions in Calendar and Date/Time »
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