Email for developers

Transactional and marketing email with an API, SMTP submission, and a message log that answers why didn’t it arrive.

Free to start. See every plan

One request to send

A REST API and SMTP submission on the same account. Create a key, send, and watch the message land in the log.

curl -X POST https://postrun.dev/emails \
  -H "Authorization: Bearer $POSTRUN_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "hello@yourdomain.com",
    "to": "you@example.com",
    "subject": "It works",
    "text": "Sent from Postrun."
  }'

Verifying a domain is a button

If your DNS lives with us, we publish DKIM, SPF and the rest ourselves — nothing to copy, nothing to mistype. Point your nameservers at us once and key rotation, tracking domains and DMARC need nothing further.

Send before DNS is done

Every new account gets a shared sender it can reach its own inbox from, so your first email does not wait on a record propagating.

A log that answers why

Every message sent through the API or SMTP, and what happened to it — delivered, bounced, suppressed — so “why didn’t it arrive” has an answer.