You can find your contacts' email addresses on Linkedin or any company website with our Chrome Extension or directly from the app with the Email Finder. Our email verification system attributes a confidence score to every email address that we find.


How do we find email addresses?

We use a combination of these two techniques:

  1. Collect publicly available emails online.

  2. Guess email addresses using algorithms.

Collect publicly available emails online

We use web crawlers that collect publicly available emails online. This can be on blog posts, comments, forums, company websites, etc. We also extract email addresses from the source code of the page you are visiting when you use the extension.

Guess email addresses using algorithms

We mainly collect company patterns (ex: and iterate until we find an email address.

If we don't manage to find an email address, it usually means that:

  • We don't have that address in our database (it wasn't publicly available online).

  • We generated the email address using the company pattern but after testing it, the confidence score was too low.

  • We couldn't identify the company pattern.

Finding valid emails can be arduous as people frequently switch jobs and companies but we're doing everything we can to continuously improve and update our system and our databases!

What is a Confidence Score?

The Confidence Score determines the quality of the email address – the higher the score, the better.

Set the minimum confidence score

Our default minimum confidence score is 66% as it provides a reliable quality for your campaigns.

Your company admin can choose to set a confidence score between 5% and 100% in Settings > Email Finder & Verifier.

Verification Level from 5% to 33%: email addresses are not verified. All emails found/imported are included in your contacts list. Send messages to these addresses at your own risk.

Verification Level from 33% to 66%: emails are verified and uploaded to your list if:

  • They are primarily detected as valid.

  • The verification process wasn't completed. This is what we call an unknown status. We cannot verify the validity of the address for some reason. Most of the time the domain didn't respond quickly enough.

  • The server is set to receive all emails sent to a specific domain. This is a process called accept-all. It means that the domain that is set that way will accept any email it is sent, without making any email sent to a possibly invalid email address bounce back. The deliverability is treated internally with a firewall or a spam filtering tool that may simply remove the message or send a bounce message at a later time. It is thus impossible to be one hundred percent sure of the validity of an address in that case.

Verification Level higher than 66%: emails are verified and uploaded only if they are confirmed as valid. In that case, we are almost certain that these emails represent a real account/inbox available at the given domain. These addresses are safe to mail.

Please note that even though our score is a reliable way to determine the quality of the email address, messages can still bounce as there are more factors that might contribute. For example, the recipient's inbox is full and can't receive any more messages at the moment.

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