SMTP Zen is the email backbone for people who run more than one domain and just want it to work. Plug in production-grade SMTP, add unlimited domains, and get guided SPF, DKIM, and DMARC so your password resets, invoices, and alerts land where they should.

Create mailbox-free forwarders and smart catch-all in seconds, debug everything with real-time logs, and migrate safely with zero-downtime IMAPSync.

No Postfix babysitting. No deliverability roulette. Just calm, reliable email for developers, freelancers, agencies, and domain investors.