The Outlook 2007 and Thunderbird plug-ins allow users to send tracked emails from their desktop email clients.

Why did my plug-in disappear?

Major Windows or Outlook system updates can disable Outlook plug-ins. Reenabling the plug-in takes just a few simple steps.

Why does it say I have an invalid email address or password?

The Outlook plug-in requires your Prospect Insight username (your email address) and password as part of the configuration. If these credentials ever change, you will need to change them in the plug-in as well.