Tools
Send email
APIs that send, and often receive, email from a domain you own.
6 tools. Prices on each tool’s page are in $ per month and per 1,000 emails.
| Tool | Type | Pricing model | Free tier | Authentication |
|---|---|---|---|---|
| AgentMail | Hosted API | Monthly or yearly plans (Free, Developer, Startup, Enterprise) with paid add-ons | 3 inboxes, 3,000 emails a month (100 a day), 3 GB storage, no card | API key as bearer token; OAuth for the MCP server |
| Amazon SES | Hosted API | Pay as you go; $0.16 per 1,000 emails on the default Essentials plan, $0.10 à la carte | Up to $200 in AWS Free Tier credits for new AWS customers | AWS IAM credentials (SigV4) for the API; SMTP username and password; OAuth 2.1 or SigV4 for the AWS MCP Server |
| Mailgun | Hosted API | Monthly plans by email volume, with overage per 1,000 emails | Free plan: 100 emails a day, 1 custom sending domain | API key over HTTP basic auth, username api |
| Postmark | Hosted API | Monthly plans by email volume, with a per-1,000 rate above the tier | 100 emails a month, no overages, no card | Server or account API token in a request header; no OAuth |
| Resend | Hosted API | Monthly plans, $20 for 50,000 emails on Pro, overage per 1,000 | 3,000 emails a month, 100 a day | API key; OAuth for the MCP server |
| Twilio SendGrid | Hosted API | Monthly plans by email volume, from $19.95 a month, with overage per extra email | 100 emails a day for 60 days, no card | API key as a Bearer token; API key as SMTP password |
