Re:Email is your electronic memory
by newscracker on Thursday February 15, 2018 @11:05PM
(#16389771)
Not sure I got what your rhetorical question is about. You don't have to provide any first name or last name or a real name. I've also linked to the FAQ and the payments explanation in another comment above, which go into more detail about what information they avoid collecting, storing and processing.
Just as a rhetorical question: do they decline local parts in the form of firstname.lastname? Thought so.