VERIFY+ FROM ZEROBOUNCE
Verify+ from ZeroBounceⓘ is an optional and free add-on bounce checker designed for specific providers that are difficult to validate using standard techniques. During validation, we send an email to check for bounces and validate the address based on the response.
It primarily impacts disabled Yahoo, AOL, Verizon and Catch-all email addresses. Opting to use it increases the accuracy of the validation results on these domains to 99.9%
HOW TO ENABLE VERIFY+ FROM ZEROBOUNCEⓘ
Go to your ZeroBounce Account settings.
Click on Account Help or scroll down to the Account Help section.
In the lower part of this section you will find the Verify+ from ZeroBounceⓘ settings, with the 3 possible options available.<br/>These are editable only by Owner/Admin roles while User/Dev roles will see it as read-only

Choosing the first option, “Enable for all validations,” will automatically apply Verify+ from ZeroBounceⓘ to every validation. Conversely, choosing “Disable” will do the opposite.
Choosing the middle option will prompt the user during the file upload wizard(in the validation section) with the below screen:

Here, an admin/owner could choose one of the 4 options as seen below while a user/dev would only be able to choose between “Accept for this validation” and “Do not allow for this validation”

Verify+ from ZeroBounceⓘ is available at no additional cost when uploading lists for validation, when importing a list via the API or integration, when performing a single-email validationⓘ or when performing bulk validation. It’s recommended that Verify+ from ZeroBounceⓘ be used to ensure the highest levels of accuracy.
Verify+ from ZeroBounceⓘ account settings will be applied to all team members.
If you have any questions or concerns about Verify+ from ZeroBounceⓘ, please contact the Customer Support team, which is available 24/7.
As part of Verify+ an Automatic Catch-all Email Validation is performed