What&#x27;s the benefit? And, more than this, why do I <i>must</i> provide anyone my mail address? Why do I have to provide it at all?<p>I understand and I&#x27;ll provide my email address, my JID, my phone number and whatever else I&#x27;m willing to provide, if I want someone to contact me. But contact details are technically completely unnecessary to just have an account.