2026-05-16
SQL over your Fastmail inbox — and why we built faist
Fastmail shipped an MCP server. faist is the SQL layer on top: full historical index in your own Supabase, hybrid lexical + semantic search, every email ever, queryable from Claude.
notes from the inbox layer
Why SQL is the right surface for inbox agents, how faist composes with the official Fastmail MCP, and what we learn shipping it.