I would like all email addresses to be validated with an email address verifier such as [url] mailtester.ninja [/url]

This way I am sure about the seriousness of the survey as it has been checked as a correct email address

I know they are having an API maybe could it be used for such a validation

Hi Mark, some questions up front:

1. Which Limesurvey version are we talking about?

2. What "email" do you refer to? Are you running a closed survey and use the email addresses to send invitations?

3. Please explain the work-flow and at which step you'd like the check to be added.