The power of this email validation library will blow your socks off, and yet it is so simple to use. Check out these great features: syntax checking per RFC 821 specifications, MxRecord lookup, SMTP Connect, Mailbox Checking, (TLD) Top Level Domain Checking, Public Website Checking, Curse Words Checking, and Domain Typo Checking. The fake email pattern checker will catch numerous bogus email addresses that look valid. The .NET Email Validation Library uses multiple threads and takes advantage of multiple processors. It detects disposable email addresses such as mailinator. It detects free email addresses.