It's working exactly as well as the Gmail RegEx filters. No better, no worse. And that's not an osTicket issue. Unfortunately, we're finding it difficult to do a lot with filters, because there are so many ways to get false positives (unwanted matches).For example, the main issue we'd like to use a filter for is "Login Issues". We were sending an automatic reply with a canned response, asking them for specific information. No matter how sophisticated the RegEx filters, we kept getting unwanted matches, which made our auto reply look pretty silly.Jack