To Purchase within SMTP Diagnostics:

If the evaluation period has not ended, you can purchase SMTP Diagnostics by launching the application and selecting the "Purchase SMTP Diagnostics" menu item found under the Help menu.

If the evaluation period has ended, you can purchase SMTP Diagnostics by launching the application and clicking the "Buy Now" button.

To Purchase Online:

Visit our web site at http://www.smtpdiagnostics.com/order.aspx.

Registering Your License Key:

When you purchase a license to SMTP Diagnostics you will receive a license key via email.  This key must be registered within the application to unlock the application and eliminate the trial period.  To unlock the application, select the "Enter License Key" menu item found under the "Help" menu.

Note: If you purchased your license from within SMTP Diagnostics you will not need to manually enter your license key.  Your license key will automatically be registered with the application at the end of the purchasing process.