OTOH it is pretty easy to get a free email address if you don't have one already. However getting a phone number can be more work and isn't usually free. Reme

OTOH it is pretty easy to get a free email address if you don't have one already. However getting a phone number can be more work and isn't usually free. Remember also that people may want multiple accounts on your service, ie for work and personal. Or for special purposes. (eg I have a couple of twitter bots but I'm only allowed to attach my phone number to one account).