雖然最近對 protonmail 公司的想法越來越覺得要認真思考，不過預留小朋友網址還真是好玩的想法
btw 可以順便幫建個小朋友個人 domain，感覺就超蝦葩的
https://proton.me/support/mail-reservation-voucher
Learn how to reserve a Proton Mail address for your child, secure their username, and activate the account with a voucher when they’re ready.
calamus