Sort:  

Because Monero lacks an encrypted memo field. (Monero has encrypted payment IDs but these aren't quite long enough to hold an e-mail.)

Accepting Monero payments requires theshadowbrokers to exchange multiple messages over different channels.

With ZCash, a buyer sends a transaction containing an e-mail address. TSB sends file to e-mail address.

Never fear, Monero developers have been talking about adding a memo field for a while.

Thank you for the explanation.

Coin Marketplace

STEEM 0.35
TRX 0.12
JST 0.040
BTC 70733.96
ETH 3563.16
USDT 1.00
SBD 4.76