Customizing the preview pane

[Michael Tissington]

In the preview pane for email Outlook displays a Messenger circle next to
the persons name.

How can I add my own button to the right of the persons To or From name ?

 

[Sue Mosher [MVP-Outlook]]

Hi Michael! The extensibility features in Outlook don't include any way to do
that. You'd have to do some Windows API hacking.