From June 13th, 2016 to September 18th, 2016, 50% user give 5-star rating, 50% user give 1-star rating. for CUE by EmailSignatures.com chrome extension.
The daily email summary saved my butt on more than one occasion. Once an email is sent it can be out of sight- out of mind, with the summary email I'm able to recap who I emailed yesterday and did not hear back from.
send email but nothing.