Increase Email Replies With Your Closing

We sometimes spend hours, maybe even days, perfecting an email. We contemplate each word, each phrase, looking for just the right combination of words to appeal to our reader and encourage a positive response. But how much thought goes into how you close? “Sincerely”, “Thanks”? A study by email productivity provider Boomerang states that the words you chose to close an email can have an impact on whether the reader responds or not.

The study states that emails including a closing saw a higher rate of response, 47.5%, when compared to the average response rate.

The most popular eight email sign-offs appeared over a thousand times each:

  1. Thanks in advance
  2. Thanks
  3. Thank you
  4. Cheers
  5. Kind regards
  6. Regards
  7. Best regards
  8. Best

But not all closings are created equal.


Of all closings, an expression of gratitude resulted in a 36% increase in average response rate. “Thanks in advance” scored highest, with a 65.7% response rate. “Thanks” got 63%, and “thank you” received 57.9%.

The higher response rate with “thanks in advance” makes sense with the email’s recipient being thanked specifically for a response that has yet to be written, and that could prompt the person to follow through. “Even though there’s a bit of posturing involved with this closing, and you do risk coming across as a little aggressive, it turns out that  it works pretty well.

It goes back to an underlying basic tenet of graciousness. It’s saying, ‘I know this is taking up your time and I’m glad you’re reading it.’ It doesn’t always fit, but when it makes sense, it’s a good idea to use it.


Generic sign‐offs, such as “kind regards,” “regards,” and “best regards,” had the lowest response rates. And a simple “best” received the worst response rate among popular email closings, at 51.2%. While some perform better, all eight have higher response rates than average as a whole.