Email API for developers
Transactional email without the enterprise tax.
One clean API for the email your product sends — receipts, magic links, alerts. 50,000 emails for $10. And the features everyone else hides behind “Contact sales” — SAML/SSO, audit logs, SLA — cost $99, not a phone call.
curl https://mailfleet.dev/api/v1/send \
-H "Authorization: Bearer mf_live_xxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"from": "Acme <hello@acme.com>",
"to": "customer@example.com",
"subject": "Your receipt",
"html": "<p>Thanks for your order!</p>"
}'Your reputation is yours
Every customer sends from an isolated tenant. Someone else's bad list can't land your email in spam — the fleet sails together, but every ship has its own hull.
SSO without the sales call
Your enterprise customer demands SAML, your auditor wants audit logs. Everyone else quotes you four figures and a demo call. Here it's a checkbox on the $99 plan.
Five-minute integration
Verify your domain with three DNS records, grab an API key, send. REST API, SMTP relay, webhooks for delivery events. No SDK lock-in — it's just HTTP.
Pricing that respects your runway
Every plan includes the full API, DKIM/SPF/DMARC guidance, and honest deliverability.
Free
For side projects
- 3,000 emails / month
- 1 sending domain
- 7-day log retention
- API + SMTP
Starter
For products finding their feet
- 50,000 emails / month
- 3 sending domains
- 30-day log retention
- Webhooks
Pro
PopularFor growing teams
- 200,000 emails / month
- 10 sending domains
- Team members
- 90-day log retention
- Priority support
Business
Enterprise features, no sales call
- 1,000,000 emails / month
- SAML / SSO included
- Audit logs
- Dedicated IP option
- 99.9% SLA
- DPA + SOC2-friendly
Need more than a million emails or multi-region sending? Talk to us — still no sales call, just email. Obviously.
Questions developers actually ask
How is MailFleet so much cheaper than Resend or SendGrid?
We're built directly on AWS SES with a thin, efficient layer on top — no marketing suite, no sales team to feed. Every customer sends from an isolated SES tenant, and we pass the underlying economics on to you: 50,000 emails cost $10 a month.
Is there a free tier?
Yes. The Free plan includes 3,000 emails per month and 1 sending domain — no credit card required.
What do I need to start sending?
Sign up, verify a domain by publishing 3 DKIM CNAME records at your DNS provider, and create an API key. Most people send their first email in about 5 minutes. The docs walk you through every step.
Do you support SAML/SSO?
Yes — SAML/SSO is included on the $99/month Business plan, alongside audit logs and a 99.9% SLA. It's a checkbox on a self-serve plan, not an enterprise sales call.
How do you protect deliverability?
Every customer sends from their own isolated SES tenant, so someone else's bad list can't hurt your reputation. Hard bounces and spam complaints are suppressed automatically, and accounts that cross bounce or complaint thresholds are auto-paused well inside AWS limits.
Can I send marketing email?
No — MailFleet is for transactional email only: receipts, magic links, alerts, notifications. Marketing and bulk email aren't allowed under our Acceptable Use Policy.