Flowmails for indie developers: custom-domain email without the SMTP relay
Indie developers usually want transactional email that looks professional from day one — `hello@yourdomain.com`, not a Gmail alias. The traditional answer is an SMTP relay or a SaaS transactional ESP, both of which add a billing relationship, a separate dashboard, and a per-email fee. Flowmails removes all three: you connect your Cloudflare account, your domain is provisioned with Email Routing + Email Services, and you send mail from your Worker. The inbox lives in your D1, so the data is yours. There's no separate SaaS to log into, no per-email bill, and the whole thing is set up in well under an hour for a single domain.
What hurts today
The indie developers pain points
Cobbled-together Gmail-as-MX-forwarder setups break the moment you need DKIM signing
Hosted ESPs charge per email — fine at MVP, punishing at scale
Self-hosting SMTP means running Postfix, which is an operational liability for a solo dev
How Flowmails answers
What you get instead
Single Worker handles send + receive; no separate SMTPs to babysit
DKIM / SPF / DMARC alignment happens automatically because the zone is on Cloudflare
Free tier covers a personal domain's worth of mail indefinitely
FAQ
Common questions from indie developers
Other personas