Y'all are missing out on a good time.
I have a gmail account with the first name dot last name set up. As you can imagine I get quite a few messages for people who forget to tell their friends about their middle initial. However from context, I can often tell which of my name-sharing buddies the email was intended for. Over the years I have actually gotten to know a couple of them, which is fun.
I don't bother trying to tell the senders about the mistakes, they usually do nothing, oddly. The recipient, however, tends to get on it effectively.
It's quite interesting do talk to them. What's in a name?