> Email about an upcoming charge is automatically sent a couple of days in advance I'm talking about additional email. 24 hours before the transaction. With th

> Email about an upcoming charge is automatically sent a couple of days in advance I'm talking about additional email. 24 hours before the transaction. With the subject "You'll be charged $10 for renewal in 24 hours". This email will hit a lot harder. Most people's inbox is full of transactional email, as per recent post here on HN.