ComponentSpace Email Checker Component provides full syntax checking of email addresses as well as domain verification and user name testing using SMTP. Select the level of checking you require from a fast syntax check, to a DNS server MX record lookup to ensure the domain name is valid and a mail server is configured, to finally an SMTP check of the user name against the mail server. Written in 100% managed C# code, the class library offers .NET developers sophisticated email verification from within their applications. Source Code available. ComponentSpace Email Checker Component is 64-bit, .NET Framework 4 and Visual Studio 2010 compatible.