It's not best practice to use your personal ISP provided email address for something like Wikitree. You should take a gmail account or another similar account that is easy to change if necessary. Use your internet provider issued one only for serious stuff like bank contacts, utility companies, etc. I say that because someone used my email address to try to make a scam and I had to contact loads of people (cable, electric, gas, telephone, etc.) to have my email address changed. Also that made me lose contacts with a few people that only knew how to reach me with that old email address.