Email Address Checker Component for .NET

The Email Address Checker component for .NET component offers .NET developers sophisticated email verification from within their applications. Validate email address syntax and verify against the domain’s mail server.

The Email Address 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.

Part of the award winning Internet Component Suite, the component is designed specifically for .NET and is written in 100% managed C# code.

Checking an Email Address

  • Specify the type of check to perform: syntax, domain name, user name
  • Perform email address checks either synchronously or asynchronously

Syntax Checking

  • Full syntax checking as per RFC 2822
  • Extract email address components including display name, user name and domain name

Domain Name Verification

  • Validates the domain name by performing a DNS query to retrieve the domain's MX records
  • Supports using DNS A records if no MX records are configured
  • Uses default list of DNS servers or optionally specify which DNS servers to use
  • Supports DNS server outages by automatically trying backup DNS servers

Email Address Verification

  • Validates the email address by communicating with the mail server using SMTP (RFC 2821)*
  • No email is sent to the user
  • Supports SMTP server outages by automatically trying backup SMTP servers

What's Included

  • Fully featured Email Address Checker component for .NET 2.0 and .NET 3.5
  • Example projects with complete source code
  • Comprehensive documentation
  • 12 months free standard support including minor release upgrades
  • Royalty free runtime
  • Complete source code available for purchase

* Please note that although the SMTP check can determine whether an email address is bad it cannot guarantee an address is valid as not all mail servers provide notification of invalid user names. This is a function of the mail server not the component.