You have a number of problems to get around.

One of the most obvious that I can think of is where someone has multiple messaging profiles, such as on a laptop.

When you start an application such as Outlook you may need to select the profile to use.

If you have a fixed profile name you can get around it with command line switches. You may be able to use other switches to keep the process quiet.

More information about Outlook command line switches can be found here