According to Wikipedia the name Titcoin was in 2014 adopted as an Adult Entertainment payment method - their blockchain derived from Bitcoin's source code . Notably, they didn't use the domain mentioned in the email.
They bought the domain name https://tittiecoin.com/ instead.
Titcoin was founded by Edward Mansfield, Richard Allen, and a third anonymous individual. The founders developed Titcoin for the adult entertainment industry as a cash alternative payment system for performing anonymous transactions.