The only generalized tip I can offer is to check if each service allows adding a second email address vs. changing the only associated email address. Check to

The only generalized tip I can offer is to check if each service allows adding a second email address vs. changing the only associated email address. Check to see if there is a "verify email" link and verify your secondary email address. Then set is as primary if they offer that option. This gives you a potential fall-back if something goes wrong. Not every service has this option/method and this won't help with every service. My own preference and learning experience: I have started migrating off anything that does not have a brick-and-mortal presence where I can. It isn't easy and not every service has this option. e.g. Amazon -> Walmart. There are a myriad of pros and cons to this, but I personally accept the cons. Obviously this won't help with AWS. Where that logic breaks down, I migrate to services where I can easily reach a real person that does not read off a script and is permitted to decide how to assist me.