Mails.ai
Self-serve AI email API + MCP for agents. Per-agent addresses, per-agent reputation, native prompt-injection scanning on every inbound.
Our verdict
Mails.ai describes itself as Self-serve AI email API + MCP for agents. Per-agent addresses, per-agent reputation, native prompt-injection scanning on every inbound. It offers a free tier. Public pricing lists 8 plans. We do not republish the figures until a person has checked them, so follow the pricing link for current numbers. Developer documentation is published. A public changelog is maintained, which is a useful sign the product is actively worked on. Our score of 8.5 out of 10 comes from a desk review against the published rubric, recorded 2026-09-01.
Pricing
- Free tierYes
- Public price listYes
We do not republish prices we have not checked by hand, because automated price extraction proved unreliable enough to mislead. The vendor’s own page has the current figures. Why we do this
View pricing on mails.aiUser reviews
No one has reviewed Mails.ai here yet. Reviews are moderated before they appear, and our own score is editorial and separate from user ratings, though once reviews land they do lift it.
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Side by side
| Tool | Our score | From | Free tier | Best for | |
|---|---|---|---|---|---|
| Mails.ai this page | 8.3 | - | Yes | ||
| 🥇Exa | 8.5 | - | Yes | ||
| 🥈Inbound GPT | 8.5 | - | Yes | ||
| 🥉MD Editor | 8.5 | - | Yes | ||
| Retool | 8.5 | - | Yes | ||
| Pinecone | 7.9 | - | Yes | ||
| reap video | 7.9 | - | Yes |
Questions
Is Mails.ai free?
Yes. Mails.ai advertises a free tier on its own site.
How much does Mails.ai cost?
Mails.ai publishes pricing on its own site, listing 8 plans. We deliberately do not republish prices we have not verified by hand, because automated price extraction proved unreliable enough to mislead. Use the link on this page for current figures.
Does Mails.ai have an API or developer docs?
Yes, Mails.ai publishes developer documentation.
How is Mails.ai scored here?
Mails.ai scores 8.5 out of 10. That comes from a desk review of public evidence, which is capped at 8.5 out of 10: public pricing, documentation, maintenance signals and how much we could actually verify. Affiliate relationships are excluded from scoring entirely. The full rubric is published on our methodology page.