Run macro when new mail message form is opened

[starrouter]

Is there any way to automatically run a macro every time I open the new mail message form ? I have a macro that inserts the date and time that I would like to automatically when I compose a new mail message, and of-course I could do other things as well with that ability.

[JP2112]

Why not add code to your existing macro to create the message? That would avoid having to create some kind of workaround.