It only requires you to demonstrate you control the address.
https://support.google.com/mail/answer/22370?hl=en
Proton, on the other hand, only supports you owning the whole domain, as their only verification is through DNS TXT records.
It only requires you to demonstrate you control the address.
https://support.google.com/mail/answer/22370?hl=en
Proton, on the other hand, only supports you owning the whole domain, as their only verification is through DNS TXT records.