Why JMAP matters for modern email

Email has run on IMAP and SMTP for decades. They work, but they were designed for a different era. JMAP — the JSON Meta Application Protocol — is a modern alternative built for fast, mobile, battery-friendly clients.

What JMAP improves

• Efficient sync — fetch only what changed, instead of polling folders.
• One connection for mail, contacts and calendars.
• Built for the web and mobile, with JSON over HTTPS.

Standards, not lock-in

Reeva speaks JMAP for modern apps and still supports IMAP and SMTP for everything else. You are never trapped: use the client you prefer, and take your data with you whenever you like.