Configuring preferences and options in Outlook.com
I read somewhere that if you have used all 10 of your aliases you cannot add a custom email address. My husband has the option but I don't, because I have used all 10 aliases and he hasn't (assuming here). I am having a different issue as today I cannot see any of the options under Premium and get a message to try back later. I deleted an alias to try and see if the option showed up and if it does, once this new error goes away, I will comment here to let you know.