Collecting email addresses for leads or email lists is great, if you getting actual email addresses. Little value is build, if your emails bounce and your SPAM score increases.
This with email validator you get information about:
regex: validates the email address per regex
typo: returns true, if the email address contains a typo
disposable: returns true, if the email address is associated with a known disposable email service
DNS records such as MX & SMTP: is the domain configured to receive emails?
Avoid emails bounces and grow your email list today!