Open-source email infrastructure with automated deliverability
Email hosting for your own domain, built for people and their AI agents
Stage
Not given
Startup
Founded
Not given
Not given
Based in
Not given
US
Pricing model
Not given
Freemium
Pricing
Free plan: 3,000 emails/month with 100/day limit. Pro: $10/month for 50,000 emails/month with no daily limit. Growth: $20/month for 100,000 emails/month with no daily limit. Enterprise: custom pricing. Overage emails on paid plans: $0.50 per 1,000. Pay-as-you-go Credits: $5 per 10,000 emails ($0.50
Free plan: sandbox domain (myapp.fm-sandbox.dev), up to 10 recipients per rolling 24 hours (300 a month), no card required. Pro: $20/month, 50,000 recipients a month, unlimited custom domains and addresses, agent inboxes, REST API, CLI and MCP server. Charged in USD monthly; hard limits with no over
Key features
Disposable email detection against ~210,000-provider catalogue
Role address detection and MX record lookup
Automated IP warmup with volume ramps
Email templates and editor
AI agent integration via MCP server
SMTP relay with custom domains
Email validation and list cleaning
Delivery analytics and open/click tracking
Spam testing and reputation monitoring
Developer CLI for terminal access
Unlimited domains and email addresses
Agent inboxes with scoped API keys
REST API and Resend-compatible API
Remote MCP server
Keyboard-first web inbox with threading and search
SMTP relay and CLI tool
DKIM, SPF and DMARC setup with live verification
Webhooks, templates and scheduled sends
Open and click tracking
Team roles and audit log without per-seat fees
What makes it different
No API key required for free temp email checker, rate-limited per IP
Open source under Apache 2.0 with same code for self-hosted and cloud
AI-native with MCP integration for Claude, Cursor and other agents
Agent-native with scoped API keys and MCP server integration
Resend-compatible API for drop-in migration
One flat price for unlimited domains and team members
Built-in deliverability with automatic suppression
Transactional email only for consistent deliverability