Sendable - Co-Founder & CTO

Sendable checks every email against the rules Gmail, Outlook and Yahoo publish for senders, flags what is likely keeping you out of the inbox, and writes the next email for you. I co-founded it in March 2026 as CTO and was the only engineer.

What I built

• Audits: 1 email graded against 45 to 120 checks (authentication, infrastructure, hygiene, copywriting, domain and engagement). The result is a score in plain English, the few fixes worth doing first, and the points each fix gains.
• Domain health: reads the daily DMARC reports that mailbox providers send about your domain, works out who really sent each email from DKIM domain keys and vendor IP ranges, and explains each problem and its fix in plain English.
• Generate and brand voice: writes the next email in your voice so it passes the deliverability and copy checks.
• Fair scores for forwarded mail: the audit finds the original email inside a forward and skips the checks that forwarding breaks.

Built solo on AWS.

Where it is now

Paused since September 2026. I stopped the servers. Next, I plan to open-source the core as an agent skill.