The right message, at the right time.

Transactional email from your verified business domain.

RelyPost API accepts requests with scoped API keys, validates sender ownership, reserves sending limits and schedules submission through the mail infrastructure.

Idempotency keys make API request retries safe. Signed webhooks report queued, submitted and failure states. SMTP submission is not a guarantee of inbox delivery.

API access is subject to platform and organization enablement. Initial availability and sending limits follow the operating capacity and reputation of the service.