Custom URL Variables
This feature allows you to store respondent data by passing values through a survey link to be added into the survey results. For example, you can associate a customer ID field or an email address field, which is already in your database, with your survey respondents. Once stored, the data is shown in the Analyze section together with the survey results. Custom URL Variables is only available on paid plans.
A typical survey link looks like this:
If, for example, you wanted to pass the respondent customer ID and email address from your database into the survey, it would look like this:
When the respondent completes the survey, the custom data in the URL is linked to the respondent, shown in the the Analyze section, and included in the Export files.