migrating from yahoo mail to icloud mail
Hoping for a little insight on this. My dad wants to migrate from using his @yahoo.com email address to creating a new @icloud.com address. He is currently using the native Apple Mail app on his iMac, iPad, and iPhone for his yahoo email and would like to continue doing this with the iCloud email.
Right now his Apple ID is his yahoo email address. Should I consider creating an entirely new Apple ID which would be the same as his new @icloud.com email address? Or should I keep his Apple ID the same (@yahoo.com) and just add a new @icloud.com email address to his account (I think that is possible.) It looks like I'd need to having him sign out of all his devices if I create a new Apple ID, which probably wouldn't be a big deal if I was with him, but he lives 600 miles away and I'm trying to keep this as simple as possible. But I'm concerned there may be future implications if I don't just switch his Apple ID over to an @icloud.com address right now.
Thanks in advance!
Lanny