A friend advised Winpure, so far so good. What you think about it?
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Winpure is a data cleansing software so it depends on what you achieve with it. If you want to validate your email database I found that there is better software for that. This comparison between the services that are found over the Internet might help: https://www.zerobounce.net/zerobounce-vs-winpure.html
Winpure is a provider of data cleansing and data quality solutions. The company offers a suite of software tools and services that help organizations cleanse, standardize, and enrich their data. Winpure Services also offers to consult and training services to help organizations implement and use its solutions effectively.