AISend vs Resend
Resend Alternative — drop-in compatible, $14 for 50,000 emails
Resend nailed the developer experience for modern transactional email. AISend is built on the same payload spec — same JSON shape, same Bearer token format (re_*), same /emails endpoint — so you migrate by changing only the base URL. What AISend offers: the same 50,000 emails for $14/mo instead of $20/mo, plus send-time guardrails — recipients with bad syntax, disposable domains, or no mail servers are rejected before they are sent, and bounced or complained addresses are suppressed automatically. Resend is still the better pick in several cases, listed below.
Why Developers Switch from Resend
- Pro costs $20/mo for 50,000 emails; AISend Pro is $14/mo for the same volume
- React Email is great if you use React; less helpful for Go, Python, Ruby teams
AISend vs Resend — Feature Comparison
| Feature | AISend | Resend |
|---|---|---|
| MCP server for AI agents | Yes (aisend-mcp on npm) | Yes (hosted, or resend-mcp on npm) |
| Test sender (email yourself, no DNS) | hello@send.aisend.app | onboarding@resend.dev |
| Sending to your users | Verify your own domain | Verify your own domain |
| Drop-in API | Yes — change baseUrl only | — |
| Automatic suppression list | Built in | Built in |
| Idempotency keys | Yes | Yes |
| Free tier / trial | 3-day trial: 500 emails, no card | 3,000/month (100/day cap) |
| Custom domains before paying | 1 (during the trial) | 3 (free plan) |
| 50,000 emails/month | $14/mo (Pro) | $20/mo (Pro) |
| 100,000 emails/month | $63/mo (Business) | $35/mo (Pro) |
| Daily limit on paid plans | 2,500/day Pro, 5,000/day Business (lower during an account's first 14 days) | No limit |
| Webhooks | Yes | Yes |
| Bearer token format | re_* (same as Resend) | re_* |
Where Resend Is the Better Choice
- Above 50,000 emails a month: Resend Pro is $35/mo for 100,000 emails, while AISend Business is $63/mo
- No daily sending limit on paid plans; AISend caps Pro at 2,500 emails a day and Business at 5,000 (lower during an account's first 14 days)
- Its free plan includes 3 custom domains and never expires; AISend has no free plan, only a 3-day trial with 1 domain
- An official MCP server (hosted or self-run) — AI-agent access is not unique to AISend
- Inbound email, React Email, and a far longer production track record
Resend facts checked October 9, 2026 against Resend pricing and Resend MCP server docs. Recheck before you buy — providers change their plans.
How to Switch from Resend to AISend
- 1Sign up for AISend and create an API key (re_* format, same as Resend)
- 2Change your base URL from https://api.resend.com to https://api.aisend.app
- 3Swap the Bearer token — that's the only required code change
- 4Add and verify your sending domain (re-do SPF/DKIM DNS) — same requirement as Resend; 1 domain is included in the trial
- 5Send. The /emails endpoint, payload, and response shape are unchanged.
Ready to Send Smarter Than Resend?
3-day free trial, 500 emails, no credit card required. Set up in 5 minutes.