Mailchimp vs Mails.ai
Both sit in email marketing. Here is how they differ on the things you can actually check.
On price: Mailchimp starts $7 a month cheaper than Mails.ai ($13 against $20, 35% less) on its Essentials tier. Both figures were read from the vendors' own pricing pages on the dates shown below.
Mailchimp
mailchimp.com
One of the longest-running email marketing platforms. Campaign builder, audience segmentation, landing pages, basic automation journeys and a large template library. Owned by Intuit.
Mails.ai
mails.ai
Gives an AI agent a real mailbox: inbound arrives as structured reply events carrying a prompt-injection score and sender reputation, with a six-category injection scanner on every message, dedicated IPs and an MCP server. Cold email is refused at the API rather than in the fine print.
| Mailchimp | Mails.ai | |
|---|---|---|
| Entry price | $13/mo | $20/mo |
| Entry plan | Essentials | Pro |
| Paid annually | $13/mo | — |
| Price checked | 21 Sept 2026 | 21 Sept 2026 |
| Pricing model | Free plan | Free plan |
| Free plan | Yes | Yes |
| Category | Email Marketing | Email Marketing |
| Around since | 2001 | 2025 |
Every price here was read from the vendor's own pricing page, most recently on 21 Sept 2026. Entry tier only — vendors change pricing without notice.
Mailchimp vs Mails.ai, answered
- Is Mailchimp cheaper than Mails.ai?
- Yes. Mailchimp starts at $13 a month against Mails.ai's $20, 35% less.
- Do Mailchimp or Mails.ai have a free plan?
- Both do. Mailchimp and Mails.ai each publish an ongoing free tier rather than a time-limited trial.
- What is the difference between Mailchimp and Mails.ai?
- Mailchimp: One of the longest-running email marketing platforms. Campaign builder, audience segmentation, landing pages, basic automation journeys and a large template library. Owned by Intuit. Mails.ai: Gives an AI agent a real mailbox: inbound arrives as structured reply events carrying a prompt-injection score and sender reputation, with a six-category injection scanner on every message, dedicated IPs and an MCP server. Cold email is refused at the API rather than in the fine print.
