Have you ever noticed that some people call you with questions even if you did not close your message with "Please let me know if you have any questions"? And how many thousands of times have you written "Please let me know if you have any questions" without getting questions from your readers? Contrarily, have you observed that sometimes people don't call you with questions when they should, because they clearly don't understand what you told them or mess up on what you have instructed them to do? For all these reasons and a few more, I wonder about the value of that overused closing.
If you have been in the work world for a while, you know that the daily messages you write could number in the hundreds. We're on autopilot, some of our responses running a single word, like "Done," "OK," "Yes," or "No"; some cutting and pasting previous comments; others embedded in the previous message. We know all the shortcuts. We must, otherwise we would never finish our work. Who has time for anything else?
I no longer see the point in closing a message with "Please let me know if you have any questions" or its hybrids. I can understand a closing that says, "I look forward to receiving your response" to accentuate the urgency of a message. Or "I will be at meetings all day but at my desk for the rest of the week" to indicate your availability. Or "Since this new procedure will likely require a learning curve, you can click here for the Help Desk" to express support. Or "This proposal will stay in effect for 30 days" to encourage your client to act. Or "If we do not receive a response by Thursday, 12:00 p.m., we will close the case" to cover yourself. Give some thought about the next step for the reader.
Of course, your reader will contact you with questions, even if you don't tell them to. You might think "Please let me know if you have any questions" is better than nothing. I think not.
