How accurate is mailfloss?



We are really accurate thanks to our Deep Clean engine, which runs additional tests that most other verifiers do not. 

We don’t post accuracy percentages because we don’t believe accuracy percentages are…well accurate. There are simply too many factors involved to state a misleading guaranteed accuracy percentage. We believe accuracy percentages are a marketing ploy that our competitors use without the data to back it up. 

Ideally, we strive for a balance between convenience, accuracy, and affordability, and try to keep bounce rates below 5%, ideally below 3%. Read more about our bounce rate goals here.