So I was looking at my alerts yesterday, and there were some bank transactions that had happened while I was offline. I had no idea why they sent me tu. I had to rmail them to find out.
My solution, is to have a way to write notes explaining why, in just a few words, when sending tu to another person. The note could either show up in the actual alert or be found in the transfer logs for each user.
Let me know what you think!