[reaperducer]

False. C&D letters are sent via email all the time.

Millions of Americans don't have e-mail. They're just on social media. What then?

That's why important things are always sent by mail. Very important things by certified mail.

[otterley]

That's irrelevant for this issue. Domain holders have to provide working email addresses as a condition of registration, and are reminded annually to keep their addresses up to date.

If an email address can't be found, the correspondence can be delivered through other means if necessary (mail, process server, etc.). But generally, there has no longer been a need to waste paper and postage to deliver notices since email became practically ubiquitous.

[m3047]

IANAL but I am an internet plumber. Happy to provide expert witness that e.g. Hover, owned by Tucows, has a toggle for whois in their domain admin dashboard but it does nothing: I cannot turn whois on even if I want to.

Having, or publishing, an email address does not mean I care to, choose to, or will in fact receive email sent by you; or that I will display or treat it in the fashion you desire.

[zrobotics]

They may not check their email, but how is anyone on social media without email? I'm not aware of a single social site that doesn't require an email address to create an account.

[otterley]

I believe all of them allow the use of a mobile phone number as an alternative.