AISend vs Postmark
A More Affordable Postmark Alternative
Postmark is known for excellent transactional deliverability. AISend shares that transactional focus with a Resend-compatible API, a 3-day free trial with 500 emails, and flat pricing that goes further at volume.
Why Developers Switch from Postmark
- Free tier is only 100 emails/month
- Per-email overage pricing gets expensive as volume grows
- No Resend-compatible request format — more migration work
AISend vs Postmark — Feature Comparison
| Feature | AISend | Postmark |
|---|---|---|
| Focus | Transactional email | Transactional email |
| Resend-compatible API | Yes | No |
| MCP server for AI agents | Yes | Yes (official postmark-mcp) |
| Custom Domains | Yes | Yes |
| Webhooks | Yes | Yes |
| Free Tier / Trial | 3-day trial: 500 emails, no card | 100/month |
| Entry Paid Price | $14/mo (50k) | $15/mo (10k) |
How to Switch from Postmark to AISend
- 1Sign up for AISend and get your API key
- 2Install the AISend SDK for your language
- 3Replace Postmark API calls with AISend's REST format
- 4Set up your domains in the AISend dashboard
- 5Configure webhooks for delivery events
Ready to Send Smarter Than Postmark?
3-day free trial, 500 emails, no credit card required. Set up in 5 minutes.