How to add same email address for different providers?
In my company, every has several email account with same email address but from different email providers. For example, email@example.com can be provided by Google and Outlook by their own prime services in customizing email address. And problem occurs, I am only able to add firstname.lastname@example.org in outlook for one provider ( Google or Outlook ). But both email accounts are in usage for different purposes.
How to add the same address from different providers in Outlook?