Thunderbird Appointment — Thundermail

Thunderbird Appointment makes it easy to find a time to meet. So you can ditch the admin and streamline your day.
Instead of exchanging multiple messages to schedule a meeting, select your availability and let Appointment handle the rest. Appointment is powered by open standards and compatible with Google Calendar. You can now schedule like a pro.
An intuitive interface unlocks powerful capabilities. Select available times, send a customizable link, and track RSVPs real-time.
Coordinate with contacts using Thunderbird, Google, Microsoft, and more. With unique CalDAV support, syncing is easy and everyone is invited.
Appointment is private, open source, and integrates with third-party tools like Zoom to align with the needs of your work and personal life.
The technology powering Thundermail is freely licensed and open source, offering you transparency, security, and freedom. By subscribing you fund the development of our other open source tools which remain free-of-charge, free-of-ads, and free-of-data-harvesting.
Thundermail is part of our mission to help you communicate, collaborate, and connect freely. The Thunderbird Desktop and Mobile apps remain the core of how we offer these benefits and your subscription helps us make them even better.
Money isn’t our mission, it is the means to bring freedom and productivity to as many people as possible. Freely licensed software, open source code, and open standards liberate you and remain at the heart of Thunderbird.
Get Thundermail, Appointment, and Send in one simple subscription. You’ll love the confidence, ease, and security these services add to Thunderbird. Thank you for supporting freedom.
Our initial offering, ideal for most users
30 GB of Mail Storage
60 GB of Send Storage
1 Inbox, 15 Email Addresses
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