Features
Syntax & MX validation
Checks the format, domain, MX record and catch-all
Non-intrusive SMTP ping
Confirm that the mailbox really exists without sending an email.
Role & disposable address detection
Filter out support@, admin@, temporary accounts and +spam aliases.
Syntax, DNS and MX checks plus a secure SMTP ping
No: your lists are deleted when the corresponding email record is deleted by the user.
No, with the unlimited plan you can make as many requests as you need.