.NET Email Validation Library

.NET Email Validation Library is the cutting edge of email validation. It detects mail servers that implement grey listing so the email addresses can be verified later, servers that are blocking your mail server, disposable email addresses such as mailinator.com, and free email addresses. It performs industry syntax checking, mxRecord (Mail Exchange Record) lookups, and mailbox verification using multiple threads asynchronously.

Requirements:

Microsoft .NET Framework 2.0

Limitations:

30-day trial