Reference
Billing
PostMTA uses straightforward usage-based pricing. Pay for what you send.
Plans
| Plan | Monthly Fee | API Rate | Support |
|---|---|---|---|
| Starter | $0 (10K free/mo) | 60 req/min | Community |
| Growth | $35/mo | 300 req/min | |
| Scale | $135/mo | 1,000 req/min | Priority |
| Enterprise | Custom | Custom | Dedicated CSM |
Overage Pricing
| Plan | Overage Rate |
|---|---|
| Starter | $0.0015/email (first 10K free) |
| Growth | $0.0010/email |
| Scale | $0.0006/email |
| Enterprise | Custom negotiated rate |
Dedicated IPs
| Add-on | Price |
|---|---|
| 1 dedicated IP | $25/month |
| 5 dedicated IPs | $90/month (20% off) |
| 10+ dedicated IPs | $15/IP/month (40% off) |
Invoices
curl https://api.postmta.com/v1/billing/invoices -H "Authorization: Bearer pmta_live_xxxx"Usage Dashboard
curl https://api.postmta.com/v1/billing/usage -H "Authorization: Bearer pmta_live_xxxx"{"current_period":{"month":"2026-01","emails_sent":67234,"emails_limit":100000,"used_pct":67.2,"estimated_cost":"$74.23","days_remaining":15}}Cancellations
Cancel at any time from Settings → Billing → Cancel Plan. Your plan stays active until end of billing period.
Cancellation does not delete your data. Domains, suppression lists, templates, and analytics history are retained for 90 days.
Enterprise Contracts
Enterprise customers can pay via invoice (net-30), commit to annual contracts for volume discounts, and receive custom SLAs. Contact sales.