The choice of domain names is a pretty awesome feature for Proton Mail, but it's very frustrating that the letters used are too phonetically similar and make it difficult to say over the phone. I've always struggled to remember a consistent radio call chart of letters, and I get so nervous about saying my email address over the phone that I do anything I can to avoid such conversations. I've even had a customer service person get the wrong the email address despite me trying very hard to spell it out, and I've been avoiding calling them back to fix it because I expect the same problem to happen again (yes, I'll have to bring up one of the charts before I call - I'm just going to have to research AGAIN which is the better one rather than one of the worse earlier iterations. I just never remember the name of the better one!).

The letters P, E, and M are terrible for this.

Please do something far above and beyond the services offered by other mail providers by giving us at least one, short domain option that uses phonetically distinct, unique (non-repeating) letters that is very easy for most speakers to say over the phone that most other speakers can understand, especially if this alphabet isn't used in the first language of the speaker or listener.

Bonus points if you hire linguists to research this and get a few options. Get ahead of the curve and establish something that could be the standard for all email domains around the world.

Even develop a tool that assesses usernames at account creation for phonetic ease and even recommends changes or improvements to usernames to make them phonetically better (this isn't useful for online-only accounts, but incredibly valuable and desirable for emails that we know we're going to be using over the phone a lot, such as for business accounts).