kitio.aiAgentMail vs AI Engine
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AgentMail starts at $20/mo and AI Engine starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Inboxes created by API
- Threaded send and receive
- Attachments
- Webhooks and events
- Custom domains
- Per-agent permissions
- Website chatbots
- AI writing in the editor
- Free MCP server
- Answers from site content (Pro)
- AI forms and image generation
- Multiple model providers
| Feature | AgentMail | AI Engine |
|---|---|---|
| Best for | Email inbox API that gives AI agents their own addresses | WordPress plugin for AI chatbots, writing and an MCP server |
| Category | Agents & automation | Agents & automation |
| Pricing model | Freemium | Freemium |
| Starting price | $20/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | AgentMail | Meow Apps |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
AgentMail starts at $20/mo and AI Engine starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- 3 inboxes
- 3,000 emails a month
- 1 custom domain
- 3 GB storage
Developer
$20/mo
- 10 inboxes
- 10,000 emails a month
- 10 custom domains
- Email support
Startup
$200/mo
- 150 inboxes
- 150 custom domains
- 10 organization seats
- SOC 2 report
Enterprise
Contact sales
- Bring-your-own-cloud deployment
- Dedicated IPs
- OIDC and SAML SSO
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
AgentMail
- Free tier with three inboxes
- Python and TypeScript SDKs plus MCP
- Custom domains with DKIM, SPF and DMARC
- Free plan capped at 100 emails a day
- SOC 2 report only on Startup and up
- Dedicated IPs require Enterprise
AI Engine
- Free MCP server with no daily cap
- Works with many model providers
- Widely installed on WordPress
- Requires a WordPress site
- You pay model providers for API usage
- Content-grounded answers need Pro
Which one should you choose?
Choose AgentMail if you want:
- Free tier with three inboxes
- Python and TypeScript SDKs plus MCP
- Custom domains with DKIM, SPF and DMARC
Watch out: free plan capped at 100 emails a day.
Choose AI Engine if you want:
- Free MCP server with no daily cap
- Works with many model providers
- Widely installed on WordPress
Watch out: requires a wordpress site.
AgentMail vs AI Engine FAQ
What is the difference between AgentMail and AI Engine?
AgentMail: Email inbox API that gives AI agents their own addresses. AI Engine: WordPress plugin for AI chatbots, writing and an MCP server. Both are agents & automation tools.
Is AgentMail or AI Engine cheaper?
AgentMail starts at $20/mo and AI Engine starts at See pricing page. Check both pricing pages for current plans.
Do AgentMail and AI Engine have free plans?
AgentMail: Yes. AI Engine: Yes.
Who makes AgentMail?
AgentMail is made by AgentMail.
Who makes AI Engine?
AI Engine is made by Meow Apps.
Which should I choose, AgentMail or AI Engine?
Choose AgentMail if you value free tier with three inboxes and python and typescript sdks plus mcp. Choose AI Engine if you value free mcp server with no daily cap and works with many model providers.