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Hey Nikolaos, thanks for reaching out! Would love to fully understand the problem that is being experienced within this Clay table. How can we assist? :)

Seems that findymail returns that some mails are valid while the other providers return it as invalid . Which one can I trust ?

Great question! From what we have seen Prospeo, Lead magic and People Data labs are the most accurate email validation providers. Although People Data labs may need some configuration, since it is not solely an email finder. Regadless, in this case which email validation service are you using? The reason why there are some differences in results is because some validation providers handle 'catch-all' emails differently because, until an email is actually sent, it’s impossible to determine if a catch-all address will bounce. While catch-all emails are inherently uncertain, they don’t pose significant risk. Even if they bounce, your sender domain reputation won’t be affected as long as you maintain proper cold email practices (sending fewer than 100-200 emails per day).

I am using Findymail as they claim to be able to validate catch all emails - something that other denounce providers can’t . So my providers I use are

And normally Debounce. But due to the claims of findymail I switched to them. Sidenote: I am usually looking to find emails from leads in Europe

Got it—thank you for clarifying! Could you let me know which row you're referring to regarding the provider marking the email as invalid, while Findymail validates it as valid? When it comes to choosing a provider, it really depends on your personal preference and which one you trust most after reviewing the results. Personally, I tend to prefer LeadMagic or Zerobounce as my first choice for email validation services. That said, it ultimately comes down to your preference and trust in the various providers available. More information about their processes on how they validate emails can be found on their website such as this post from FindyMail: 'How to Verify an Email Address without Sending an Email'. If you’re unsure about the reputation or quality of these validation services, I highly recommend doing some research to make an informed, independent decision. Based on what we’ve observed, Prospeo, LeadMagic, ZeroBounce and People Data Labs are among the most accurate email validation services. I hope this helps! Feel free to reach out if you have any further questions or concerns. :)