# Documentation

- [What is MailerCheck?](/): MailerCheck is an email verification, analysis and list cleaning tool with a RESTful API that is fully featured and easy to integrate with.
- [Authentication](/authentication): Authenticate with the MailerCheck API using a bearer token passed in the Authorization header of every request.
- [Account](/account): Retrieve the account, user and credit balance associated with the API token being used.
- [Email verification](/email): Verify single emails in real time or asynchronously, manage verification lists, and interpret MailerCheck verification results.