From April 15th, 2019 to April 15th, 2019, 100% user give 5-star rating. for On-The-Fly Email Validation chrome extension.
I installed this app a few hours ago and I love it! I have an online store where I also take phone orders. Before the users gets off the phone I can check if the email on the order page is good by clicking 1 button. I've had 6 emails just this morning that was invalid, that saved me 2 hours of calling my clients for an updated email.