Comment by nlawalker

I got a great tip here on HN: if your credit card supports email notifications for transactions, set it to alert you on every transaction. On my Citi card the notification is called “Transaction amount exceeds” and is configurable with a dollar amount, which I set to zero. Now I get an email within a minute or two of every charge that includes the amount and payee in the email. It’s a great way to put recurring charges you might have forgotten about “in your face” and lets you skip reviewing your whole statement at the end of the month (and gives you a searchable “database” of charge history).