I wanted to ask if there is a whitelist for mail attachments. There have been similar questions, but it seems there is none. There is a feature request on the ideas site, but it has exactly 2 votes. So I was wondering how everybody else is handling this. I mean, we need exactly 4 filetypes that we want to allow and the stuff that is sent to us is constantly changing, so the huge blacklist needs to be changed regularly. Am I missing another way to handle this?