A while back, someone in the SBS 2008 newsgroup had a good question. Short story is that they are making extensive use of their companyweb, including content approval in some document libraries. They have configured email alerts on these libraries, so approvers are notified when new documents are added and waiting approval. However, a few of these approvers travelled regularly, and were often out of the office. When they received new email alerts from their companyweb, the