Developer docs · InboxRatio Editorial
Mailrelay email API: SDKs, docs and limits (2026)
Every link below points into Mailrelay's official developer documentation and was checked on 10 September 2026. We record only what the vendor documents — a field we could not verify at the source is left out, never guessed.
From Mailrelay's official docs · checked 10 September 2026
Docs, SDKs and limits
- Developer docs
- apidocs.mailrelay.com/
- Webhooks
- Webhook docsEvent subscriptions API
From our feature matrix — documented by the vendor
API, SMTP and sending auth
- API'Robust and easy Rest API allowing custom integrations'
- SDKs / client librariesnot documented in apidocs.mailrelay.com (X-AUTH-TOKEN REST only) or mailrelay.com/en/plugins-tools/ — searched 2026-09-10
- Public API docsPublic API documentation covering subscribers, campaigns, SMS, WhatsApp, ecommerce, bounces, SMTP emails
- Webhooks'Webhooks' and 'Webhook actions' listed in all plans; webhooks fire when a subscriber is added to/removed from a group or unsubscribes (configured in Automations)
- SMTP APISMTP server on all accounts
- SMTP relay'SMTP server is available for all accounts'
- Transactional email'Use it to deliver transactional emails or even for high volume sending'
- SPF assistanceSPF setup guide: add 'include:spf.ipzmarketing.com' (or 'v=spf1 include:spf.ipzmarketing.com –all')
- DKIM setupDKIM CNAME 'ipz._domainkey.yourdomain.com' → 'dkim.ipzmarketing.com.'
- DMARC supportGuide includes DMARC TXT record '_dmarc.yourdomain.com' with 'v=DMARC1; p=none;'
Features checked 10 September 2026. ✓ documented · ◐ limited or plan-gated · × documented as absent · — not documented. Documentation is not a measured result — see our methodology.
Generated from our datasets — every value verified and dated
Frequently asked questions
Where are the official Mailrelay API docs?
Mailrelay's official developer documentation is at https://apidocs.mailrelay.com/. Links checked on 10 September 2026.
Does Mailrelay offer webhooks?
Yes. Mailrelay's official docs cover webhook event notifications (Event subscriptions API): https://apidocs.mailrelay.com/tag/event-subscriptions (checked 10 September 2026).