A dev-facing customer data platform with code-defined journeys.

Send transactional emails, ingest events, build user profiles, and run users through journeys that react the moment they act.

Every app streams identify and track events into one profile space; identity resolution merges profiles as it learns.

Segments update the moment an event arrives, so journeys fire instantly.

Durable per-user automations that start on an event or a segment entry, step through waits and sends, and fire signed webhooks.

Receipts, resets, and account notices delivered from a managed pipeline on your verified domain, with delivery feedback handled for you.

Already sending with the Resend SDK? Point its base URL at Cowliss and keep your code, batch sends included.

Journeys and templates are TypeScript in your own repo, versioned and pushed with the cow CLI.