Even so, they could provide the option, which probably no more than 1-2% of the users would ever use - those who actually need their privacy to be protected, while the rest probably "won't care".
Leave it up to the users to decide whether they want to use end-to-end encryption despite a potential spam problem. It's also not like people couldn't use multiple email addresses.
Leave it up to the users to decide whether they want to use end-to-end encryption despite a potential spam problem. It's also not like people couldn't use multiple email addresses.