legacy-proxy is a translation layer that puts a JMAP for Mail server in front of a classic IMAP / SMTP / ManageSieve / CardDAV stack. It speaks RFC 8620 + RFC 8621 to clients, and standard mailbox protocols to whatever server already holds the user's mail. No new mail store, no migration: the mail keeps living in the existing IMAP server, and a modern JMAP client sees the account as if it were native.
There are no reported vulnerabilities
30 Day SummaryAug 27 2026 — Sep 26 2026
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12 Month SummarySep 26 2025 — Sep 26 2026
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