What I like best about Prospeo.io is how simple and fast it is to find and verify professional email addresses. The interface is easy to use, the results are generally accurate, and it saves a lot of time when building targeted B2B prospect lists for outreach campaigns. Review collected by and hosted on G2.com.

The main downside is that not every search returns a verified email, especially for smaller companies or less common contacts. Occasionally, some information can also be outdated, so an extra verification step is sometimes helpful. Overall, though, it works well for most of our prospecting needs. Review collected by and hosted on G2.com.