private beta · by invite
turn SMTP into recurring revenue.
White-label transactional email infrastructure for MSPs and agencies. Multi-tenant, fully isolated, priced for resale.
SMTP isn't a cost center.
It's a product line you're already running — just not billing for.
what it is
One platform. Three things that matter.
White-label
Your domain, your brand, your invoice. mailmate is invisible to your customers. The dashboard, the sending domain, the support contact — all yours.
Multi-tenant
Complete isolation between tenants. One client's bad sending day can't affect another. Separate credentials, separate reputation, separate logs.
Deliverability
SPF, DKIM, DMARC configured per-tenant. Bounce and suppression management. IP warmup and rotation. Feedback loop integration with major ISPs.
for operators
Who it's built for.
If you run transactional email for more than five clients, you're already an email operator. You just might not be billing for it.
MSP Technical Leads
You're running Postfix for 30 clients. Every bounce is a ticket. Every blocklist is an emergency. Stop eating the cost — start billing for the service.
Digital Agencies
Client retainers include 'deliverability' buried in misc. That's a product line with a real price. White-label it and add it to every contract.
Hosting & Print Providers
You already sell infrastructure. Transactional email is a clean add-on: isolated per domain, recurring revenue, minimal support overhead.
“We turned the unbilled email work into a $14k/mo line item in nine weeks. The customers didn't even know we'd swapped vendors.”
turn SMTP into recurring revenue.
Private beta is open to operators managing email for 5+ tenants.
Request access ›