Some people are going to consider this an ugly hack, so I’ve been hesitant to share it. However, it works very well, so here it is. When I get an email receipt, I simply leave it in my inbox. (As I’ve said before, I don’t worry about trying to delete everything out of my inbox–I just keep everything I might need in there where I can easily search it.) So, all of my email receipts are in my inbox.
When I import my credit card statement into my financial software, I like to add a note on each item saying what it was for. I’ve found that the most efficient way to find the receipt is to do a search in my email program for the price. Most of the time this is a unique number, and I only get one email–the receipt I’m looking for. If there are more than one, I can easily narrow it down by the date.