A second address that remembers

Mail that becomes memory.

Mail·Sum is a small, invitation-only address at @mailsum.ai for the mail that matters — the newsletters you actually read, the people you actually know. You read and ask through the AI assistant you already use, and what's worth keeping becomes pages in a private Sum: living notes on the people, projects, and ideas in your correspondence. Nothing enters your Sum until you confirm it.

Early infrastructure is live. Accounts open gradually.

A different product shape

You decide what's worth keeping.

Pages, not piles

The mail worth keeping becomes living pages — a person's situation, a project, a running plan — that stay current as new mail arrives. Your assistant proposes; only you confirm.

Unknown senders wait

New correspondents stay outside your working inbox until you decide they belong there.

Your mail stays mail

Stalwart preserves the canonical message while structured, permissioned layers make it useful to AI.