Is it possible to create a group under the company account with the general @outlook.com address vs. the company domain address? Will be having a lot of guest contacts and would like to create it as a general group. (EX: firstname.lastname@example.org vs. email@example.com)
@kcollins sorry but I am not sure if I get your request right.
In general, you can create groups with your company account and invite externals as guests. Your none company outlook mail has nothing to do with that for now. Why do you want to create a group inside your company using none company mail?