Libra is an interoperable protocol like email, not a payment service like PayPal, Calibra’s VP of product says
Source: https://cointelegraph.com/news/facebooks-calibra-exec-libra-is-more-like-email-than-paypal
Facebook’s Calibra Exec: Libra Is More Like Email Than PayPal
November 5, 2019
CoinTelegraph