Truemail - configurable framework agnostic plain Ruby email validator/verifier. Verify email via Regex, DNS and SMTP

Email validation is a tricky thing. There are a number of different ways to validate an email address and all mechanisms must conform with the best practices and provide proper validation. The Truemail gem helps you to validate emails via regex pattern (email syntax checking), presence of DNS records (mail-server existence checking), and real existence of email account on a current email server. Also Truemail gem allows performing an audit of the host in which runs.