There's no inherent reason to have an identity separate from the one the site you're joining grants you.
I'd guess that site is leveraging the effort which webmail providers spend to weed out bots and sock-puppets. And perhaps they use the address for adtech purposes. But I don't know for sure.
I'd love to hear from such sites about how they use customer email. If it's not primarily for communication, it may not make sense to accommodate it in TMTP.
I'd guess that site is leveraging the effort which webmail providers spend to weed out bots and sock-puppets. And perhaps they use the address for adtech purposes. But I don't know for sure.
I'd love to hear from such sites about how they use customer email. If it's not primarily for communication, it may not make sense to accommodate it in TMTP.