Identities provided to you by HerbMail are greater than 98% accurate. Our proprietary technology determines identities at the device level, which allows for far greater accuracy than IP-based or any other probabilistic based methods. We only provide identity information when there is very recent verified activity, to avoid sharing out of date data.
Additionally, we perform a delivery validation on each email address we provide to you, ensuring that you'll see bounce rates well under 1%.