You can use something like Google Apps Script to plug data into a google spreadsheet (http://developers.google.com/apps-script/storing_data_spread...), but the big problem you're going to have, as Bryan mentioned, is getting the data out of your email.
It really would be easier if you just had the creator of the email not BCC you on the subscription fee and just had them cobble together a daily sheet for you. Doesn't need to be anything fancy, just a CSV would do nicely.
It really would be easier if you just had the creator of the email not BCC you on the subscription fee and just had them cobble together a daily sheet for you. Doesn't need to be anything fancy, just a CSV would do nicely.