Domains & DNS
Guided SPF, DKIM, DMARC, and one-click DNS provider writes.
Transactional email platform
Send reliable email via API & SMTP
Self-hosted MailHub gives you domain DNS guidance, DKIM signing, delivery logs, and signed webhooks — without locking you into a black-box SaaS.
- Self-hosted
- DKIM
- SPF
- DMARC
- Delivery webhooks
Built for production senders
Everything you need to authenticate domains and observe delivery.
SMTP Submission
App-friendly SMTP listeners with credentials you control.
HTTP Send API
Bearer tokens and a simple JSON send endpoint for apps and services.
Delivery logs
Track queue and MTA outcomes with searchable send history.
Webhooks
Signed callbacks for sent, bounced, and failed terminal events.
Multi-user isolation
Domains, tokens, and logs stay scoped to each account.
Three ways to integrate
Pick the path that matches your stack — configure after sign-in.
API
Create an API token, then POST JSON to /api/send with Bearer auth.
See API sample →SMTP
Point your app at MailHub submission ports with per-user credentials.
See SMTP details →Webhooks
Subscribe endpoints to terminal delivery events with HMAC signatures.
See webhook events →Send API
Minimal JSON contract. Hostnames below are placeholders — replace with your MailHub host.
from— sender address on a verified domainto— recipient string or arraysubject— message subjecttext/html— message body
SMTP submission
Default listener ports (override in your deployment):
25smtp
587smtp / STARTTLS
465smtps
2525smtp
Create SMTP login credentials in the console after registration. Host example: mail.example.com
Delivery webhooks
Terminal events only — signed HTTPS callbacks to your systems.
| Status | type |
|---|---|
sent | email.sent |
bounced | email.bounced |
failed | email.failed |
Signature header: X-MailHub-Signature: t=<unix>,v1=<hmac>
Ready to send?
Create an account, add a domain, and ship your first message in minutes.