I've never received an email, but I have had a few people find me in person (a couple in my club for bad scores and a couple from other clubs in the state for good scores). I don't have a problem with it in general, but in most cases, I either need to see the scoresheets or at least know the comments to have a chance of remembering the beer. One of the bad ones, the guy quoted my OI comment, and I instantly remembered the beer in question. Turned out that the beer had been made with a standard garden hose that chemically deteriorated in the middle of his brew day and leached plasticizers into 2 of his 3 bitters that he brewed today. The good one was in a different flight, and I got the other 2, one of which only had a mild issue, but was still off. The 3rd one of the day was straight up rubber-tasting. He gave me a little of a hard time and then admitted he dumped the two batches as soon as he tasted them (but had already bottled and sent off the entries).