The email verification tool built for scale with real-time SMTP checks and 99.9% accuracy
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
Freemium
Freemium
Pricing
Not given
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
Live SMTP mailbox verification checking if a mailbox exists and accepts mail
Bulk file upload and processing for CSV and XLSX lists
REST API with batch requests supporting up to 50 addresses per call
Risk flagging for disposable, role, and catch-all addresses
MCP server integration for AI agents like Claude and Cursor
Email finder turning a name and company domain into verified work address
White-label service with custom domain and client workspaces
Free email tools including SPF, DKIM, DMARC checkers and DNS lookups
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
BillionVerify
FutureMail