Email certainty
When you fetch your results, we give you information about the email addresses that we found. As we cannot be always certain that an email address exists, we develop a scale that give you our certainty. Below you'll find the different kind of level:
| Certainty | Type of search | Meaning |
|---|---|---|
| very_sure / ultra_sure | all | 99% confidence level: The email has been verified by 3 sources. So these email addresses that have been verified three times have an average bounce rate inferior to 1%. |
| sure | all | 97% confidence level: The email has been verified by 2 sources. So these email addresses that have been verified three times have an average bounce rate inferior to 5%. |
| probable | domain-search / email-search | 90% confidence level: The email has been verified by 1 source. So these email addresses that have been verified three times have an average bounce rate inferior to 38%. |
| probable | email-verification | The email address is risky. |
| undeliverable | email-verification | The email address does not exist. |
| not_found | domain-search / email-search | We have not found an email address for this domain or this person |
| not_found | email-verification | We do not know if this email address exists or not |