Hermers mail infrastructure engineered for the machine age. One relay engine speaking IMAP, SMTP, JMAP, CalDAV, gRPC, REST, and MCP against a single source of truth. Legacy clients connect with zero config; AI agents get native MCP tools instead of raw inbox access, no PII in context. Delta-sync, exactly-once delivery, auto DKIM/DMARC/SPF. Now in private Early Access Beta: dedicated sandbox, priority access, free during testing. 👉 hermers.aduki.org/soon