Comment by stkai
One thing I'd recommend is getting your own domain for email (looks like mailbox.org allows custom domains with some plans). You never know what will happen to your email provider in the future, so having the freedom to move your domain to a different provider is valuable.
It comes with responsibility too.
Renewing your domain, keeping your registrar account safe, keeping your DNS records safe etc
Some people prefer a domain registrar that allows 10 year renewals so pick carefully as not all do