This and other friendly, helpful actions can really help. It really polishes the customer service and helps you to stand out in the crowd.
I once read about a business owner who did a follow up email to check on their service 1-2 weeks after customer's work was completed. The email encouraged the customer to post on the local review website as to how they liked their service.
This got them tons of positive reviews because the customers loved the transparency and the fact that the company went out of its way to make sure the customer was happy.
The company, rarely, if ever, got a bad a review or complaint as a result.
And the entire thing was automated, although the customer couldn't tell. All it required was plugging in the customer's email address after ringing up the transaction.
Yep, these little things can help a LOT!