Your email platform.
Your brand.
PostMTA Hosted's agency program gives you white-label sending infrastructure, child workspaces, and wholesale pricing — so you can build an email division without building MTA infrastructure.
Everything you need to run email at scale
Built for agencies who want to own the infrastructure without owning the infrastructure.
Multi-client email management
Spin up isolated child workspaces for each client in seconds. Each workspace has its own sending domains, IP pools, analytics, and API keys — fully segregated at the infrastructure level.
White-label sending infrastructure
Your clients send from your branded portal. Custom domain, your logo, your support SLA. They never see PostMTA — to them, it's your platform.
Agency-level analytics
A consolidated view across all child workspaces — total volume, aggregate delivery rates, top-performing clients, and portfolio-wide reputation scores.
Client API access
Provision API keys per child workspace with granular permissions. Your clients can integrate directly via SMTP or our REST API without ever touching your account.
Reputation isolation
Each child workspace's reputation is isolated. A bad send from one client cannot degrade the deliverability of your other clients. IP pools are per-workspace.
Wholesale credit pricing
Buy credits at partner rates and pass the savings to your clients. Earn 20–30% margin on every credit pack sold, with monthly reconciliation.
Child workspaces — fully isolated, centrally managed
Each client gets their own isolated workspace: separate sending domains, separate IP pools, separate analytics, and separate API credentials. As the agency, you see everything from a single dashboard.
Agency hierarchy
Your Agency (Parent)
Billing · Analytics · Partner settings
Client A
Workspace
Client B
Workspace
Client C
Workspace
+ N more child workspaces
Partner tiers
The more you send, the more you save. All tiers include child workspaces and branded portal access.
Partner Pro
For boutique agencies and freelancers managing 2–5 client accounts.
Min. 250 credits/mo · $0.0077 per credit
- Child workspaces for each client
- Branded sending portal
- 20% discount on all credit packs
- API access for client integration
- Basic analytics dashboard
- Email support
Partner Scale
For mid-size agencies running 5–20 client senders at volume.
Min. 750 credits/mo · $0.0071 per credit
- Everything in Partner Pro
- 25% discount on all credit packs
- Priority API rate limits (300 req/min)
- Gmail Postmaster integration per workspace
- Predictive placement checks
- Dedicated Slack channel
Partner Elite
For enterprise resellers and ESP migrations managing 20+ client accounts.
Min. 2,000 credits/mo · $0.0065 per credit
- Everything in Partner Scale
- 30% discount on all credit packs
- Unlimited child workspaces
- White-label MTA option
- SSO / SAML for agency staff
- Custom contract & SLA
- Dedicated account director
All partner tiers include a 14-day trial. Minimum 250k credits/month to start. Custom Enterprise agreements available for 5M+ credits.
Get started in 4 steps
Apply online
Fill out the partner application. We review within 1 business day and schedule an onboarding call.
Set up your agency workspace
Create your parent workspace, configure your white-label portal settings, and add your agency branding.
Provision child workspaces
Spin up isolated workspaces for each client. Each gets its own sending domains, IPs, and analytics.
Buy credits and start sending
Purchase credit packs at your partner tier rate. Add credits to your parent wallet and allocate to client workspaces. Or let clients purchase directly.
Ready to build your email division?
Apply to the Partner Program. We review every application personally and respond within one business day.