Honestly, not much. The tool claims to verify emails accurately, but my experience was the opposite. Many emails were marked as valid when they were actually bad, leading to a high bounce rate.

From what we can tell about 4% of people make a typo entering their email address. Proofy fixes this in real time and it's great value for money. we installed it in no time at all and testing was easy. We use it several hundred times a day for customer enquiries. Highly recommended A+

Proofy.io is super easy to use and does a great job cleaning my email list. It finds bad emails fast, helps reduce bounces, and makes sure my messages reach real people. The pricing is fair, and it works smoothly every time!