Cloudflare Worker
Serves the product and API, with D1 metadata, R2 mail objects, and queued jobs.
OPERATOR'S NOTE About Startup Mail
Email became a bundle. Startup Mail makes it a layer again.
Startup Mail is a focused custom-domain email service built and operated by Gustav Hartz. It gives small companies one mailbox system that people, products, and AI agents can use without adopting a full office suite.
“Company email carries identity, private conversations, and delivery reputation. Every useful shortcut still has to survive technical scrutiny.”
WHY THIS EXISTS
A mailbox should not require a calendar, document editor, meeting tool, and storage plan.
Small companies often need a handful of durable addresses: a private founder inbox, a shared hello@ address, or an operational mailbox that software can also use. Existing choices tend to start with an employee suite, a sending API, or raw infrastructure.
Startup Mail starts with the mailbox. It stores conversations, gives people a focused web inbox, forwards selected addresses, and exposes explicit interfaces for applications and agents. The product is deliberately narrow, and its limits are documented openly.
A small system with explicit boundaries.
AWS SES + SNS
Handles the external sending and receiving boundary with delivery events.
Mailbox authorization
Every customer-data query keeps tenant and private-mailbox access in scope.
Conservative by default
Sending limits, suppression, retries, and anti-abuse rules protect the shared system.
VERIFY THE DETAILS
Read the product’s boundaries, not just its claims.
TO RECEIVE
BUILT FOR SMALL COMPANIES, PRODUCTS + AGENTS