product
Built for operators, not senders.
mailmate is a multi-tenant SMTP relay with a control plane designed around the way you actually run mail for clients. Every feature is built for the operator who manages email on behalf of other people.
Control plane
Multi-tenant control plane
Manage every client from a single operator dashboard. Create tenants, generate credentials, configure authentication, and monitor delivery — all without touching the command line. Tenant isolation is enforced at the infrastructure level.
White-label
White-label dashboards
Your domain, your brand. The operator portal, the tenant dashboard, the sending domain, the support contact — all white-labeled. mailmate is invisible to your customers. They think it's your product. Because it is.
Deliverability
Deliverability operations
SPF, DKIM, and DMARC are configured per-tenant, scoped to their domain. IP warmup and rotation are automated. Bounces trigger suppression automatically. ISP feedback loops are monitored. You get alerts before problems become incidents.
Observability
Full delivery observability
Real-time delivery logs, per-tenant and per-destination. Every delivery, bounce, deferral, and complaint — timestamped and searchable. Webhook delivery events for integration with your existing tooling.
Integrations
API & integrations
SMTP on port 587, REST API, and webhooks. Postfix drop-in: one config change and a DNS update. Works with any mail client. Integrate delivery events with your PSA, RMM, or monitoring stack.
faq
Common questions.
Ready to see it in action?
Private beta is open to operators managing email for 5+ tenants.
Request access ›