I have had many requests for information. Often folks are in a hurry to receive the information. After emailing it to them I never hear back. They needed it. It was important. But they couldn’t take the few seconds to let me know it did not get caught in a spam filter or it has washed up on a beach. This requires me to send a follow up email to confirm they received it.
Someone in my customer service course said he did not have time to acknowledge all his emails. He received over 150 a day. The reality - it takes very little time to simply say “Thank you” to a customer. Most importantly it is very important to the customer to hear that you received their email.
Avoid the common mistake and acknowledge your customers’ emails.