# Bouncebuster > Bouncebuster is a simple, affordable email verification service. It cleans email lists before you send by removing hard bounces, spam traps, disposable and catch-all addresses, using real SMTP-level checks from dedicated IPs. It offers a web app, a REST API, a CLI, and an MCP server, priced below ZeroBounce and EmailListVerify. Key facts: - Results are sorted into five categories: valid, invalid, catch-all, disposable, unknown. - Verification never sends email to your contacts; it only queries mail servers, so it does not affect sender reputation. - Billing is credit-based: 1 credit per billable result. Duplicates and "unknown" results are never charged. Credits reset monthly and do not roll over. - Every account starts free with 250 verifications per month, no credit card required. ## Docs - [Documentation overview](https://bouncebuster.io/docs): how to verify via API, CLI, or MCP. - [API reference](https://bouncebuster.io/docs/api): REST endpoints, Bearer auth, request/response schemas, rate limits, errors. - [OpenAPI spec](https://app.bouncebuster.io/api/v1/openapi.json): machine-readable API description. - [CLI](https://bouncebuster.io/docs/cli): verify addresses and files from the terminal. - [MCP server](https://bouncebuster.io/docs/mcp): give AI agents an email-verification tool. ## Product - [How it works](https://bouncebuster.io/how-it-works): syntax, MX, live SMTP probing, catch-all and disposable detection. - [Pricing](https://bouncebuster.io/pricing): volume slider from Free (250) and Starter (10K) up to Enterprise Max (5M) verifications / month. - [Free email verifier](https://bouncebuster.io/free-email-verifier): check a single address instantly, no signup. ## Legal - [Privacy Policy](https://bouncebuster.io/legal/privacy) - [Terms of Service](https://bouncebuster.io/legal/terms) - [Acceptable Use Policy](https://bouncebuster.io/legal/acceptable-use)