Send email
Mailgun
Email delivery service with a REST API and SMTP that sends, receives and tracks transactional and bulk email.
At a glance
- Provider
- Sinch
- Category
- Send email
- Type
- Hosted API
- Pricing model
- Monthly plans by email volume, with overage per 1,000 emails25
- Free tier
- Free plan: 100 emails a day, 1 custom sending domain25
- Authentication
- API key over HTTP basic auth, username
api8 - Connect via
- REST API, SMTP, SDKs, local MCP server19
- Read from the provider's pages
- 2026-11-04
Pricing
- Pricing model: Monthly plans by email volume, with overage per 1,000 emails
- Free tier: $0 a month, 100 emails a day, 1 custom sending domain, 1 day of logs
- Card required for free tier: Not published
- Official MCP server: Yes, local
- Address or package:
@mailgun/mcp-server(npm), source atgithub.com/mailgun/mailgun-mcp-server, Apache 2.0 - Transport: stdio
- Who creates the account: A person signs up and activates the account in the dashboard; agent self sign-up not stated
- Where to get a key: Dashboard, Account Settings, API Keys
- Other requirements: Sandbox domain sends only to authorized recipients who verify their address; own-domain sending needs DNS records
- REST API:
https://api.mailgun.net/(US),https://api.eu.mailgun.net/(EU) - MCP server: None hosted; run locally with
npx -y @mailgun/mcp-server - OpenAPI spec: Published in the docs (OpenAPI 3.1.0)
- Metrics API: 500 requests per 10 seconds
- Rate limit headers:
X-RateLimit-Limit,X-RateLimit-Remaining,X-RateLimit-Reset; HTTP 429 when exceeded - Send API rate limit: Not published
- Data location: US or EU region; message data stays in the region where it is processed
- Retention: Events kept at least 3 days; metrics hourly 60 days, daily 1 year, monthly indefinitely
- Used for training: Not published
Read from Sinch’s own pages on 2026-11-04. Every number links to the page a value came from. For agents, the same facts as markdown: /tools/send-email/mailgun.md