When you need to track down your username months later it's nice to have that confirmation you can find later. It does not hurt to give your customers a searchable database of transactions and such.
Yeah, I don't think it needs to be long and full of salesy stuff, though.
Thank you for signing up for Foo, the best place to do Bar. Your username is X. You can login at URL, and contact us at email, support page, or phone number. Our mailing address, just in case.
Thank you for signing up for Foo, the best place to do Bar. Your username is X. You can login at URL, and contact us at email, support page, or phone number. Our mailing address, just in case.
oktnxbye