Reliable mailing for transactional & bulk emails.
Run multiple businesses, MTAs and domains from one place. Tight deliverability controls, multiple DKIM selectors, API keys with IP allow‑lists, and a campaign engine built for scale.
Everything you need to run serious mail
Configure once, reuse across entities and domains. Enforce deliverability rules on send & receive so every message plays by your policy.
Multi‑entity / multi‑tenant
Isolate brands and teams with per‑entity ownership. Keep data clean and access scoped.
Multiple MTAs per entity
Attach dedicated MTAs to an entity and tailor routing, rate limits and authentication per domain.
Multiple DKIM selectors
Generate 1024–4096‑bit keys, rotate selectors safely, and publish with copy‑paste ease.
Granular send policies
Force TLS, cap message size, restrict attachments and MIME types, and require matching rDNS.
Inbound controls
Require sender domain DKIM/SPF/DMARC, limit session duration, and throttle stream timeouts.
API keys & IP allow‑listing
Generate per‑entity keys, restrict to specific IPs, and disable/rotate instantly.
Campaign engine
Batch size & delay controls, JSON variables, templated HTML, and detailed success/error counters.
Optional signatures
Add promotional or transactional signatures (text/HTML).
Create an entity and attach one or more MTAs for your domain(s).
Generate a DKIM selector and publish the TXT record. Optionally enforce SPF/DMARC.
Send via HTTP API (or SMTP). Use campaigns to batch at your own pace.