This environment has led to a stagnation in good email clients and limited innovation from email developers. Many new clients and extensions are just for selected large email providers. Proprietary protocols have become the alternative to IMAP, but they are walled gardens, limiting both users and developers. We feel an open solution is necessary.

JMAP is the result. It is a modern, efficient, easy-to-use API, built on many years of experience and field testing at FastMail, and refined with the collective expertise of many email developers at the IETF. Its robust data synchronization model is flexible enough to go beyond email, so we can standardize contacts and calendar sync via the same method in the future to fully match the capabilities of proprietary groupware protocols..

We believe this free and open standard will help developers around the world work together to make email better for everyone.