I have multiple emails I use. Being able to use alias emails will be useful, and I’ll also be able to set up email using my own domain name through Proton - which means I can move them ito another company in the future if I decide Proton’s not the best option anymore. It also means I can set up lots of emails along the lines of [email protected], and have a seperate address for each of the major companies I deal with (like banks and insurance companies) to create another difference so that data matching won’t expose as much information. I’d looked at doing this using the company that hosts my website, but their interface did not work well for emails and it’s not very secure.