I often get mail from John, or drj, or from someone with no signature at all. But a proper sig le is just the beginning. There are many useful tricks that make e-mail a more effective tool for sender and receiver. Messages that lack a subject line are bad. And the sender can see from his outbox to whom the message was sent.
Sounds speci c enough to be helpful.
Problem is it's a reply to a reply, and the message has changed and the meeting is now on May 19, making it an almost foolproof recipe for a missed appointment. After several messages back and forth, it's still pending. Yes, tacking on previous conversations requires some judgment, because another annoying habit is to send an e-mail string that contains 12 or 18 earlier messages, complete with sig les, the addresses of everyone who has received a copy each time, and so forth. Provide context but not baggage. Nor does using the receiver's name.