EmailVerify.NET - Simple e-mail validation code in VB.NET
The following example verifies a single e-mail address, checking whether it points to a valid mailbox or not.
In the event it doesn't, a message is written to the console window.
Dim verifier = New EmailVerifier()
Dim status = verifier.Verify("address@example.org", VerificationLevel.Mailbox)
If status.IsSuccess Then
Console.WriteLine("Mailbox verification test passed.")
End If