Options for 3rd Party URL (Variables, Redirect, Limiter)
Pass any Ethnio variables to this external URL?
If you're passing variables TO Ethnio in your intercept or study link, Ethnio can then pass those to an external tool that supports external variables.
Please note you can also pass certain Ethnio question types to 3rd Party URLs, but you need to enable that for each question in the study › editor › questions.

Pass email field as a variable
The most important step is to tell whatever tool you're using that the variable name is "email." We use the fairly standard syntax that will look like this when your participants click through:
http://surveyexample.com/study123?email=person@person.com
Keep in mind you will be passing emails as plain text along with the URL, which could violate some privacy policies. If that's the case, please don't use this feature. :-)
Limiter / Automatic Shut Off
If you'd like to turn the study off automatically after a certain number of responses, you can turn this "Limiter" on. Keep in mind it doesn't take into account successful completes, so as a general rule of thumb, add 30% to the total number of desired completes. For example, if you want to turn this study off after 100 completes, set the limiter to 130.
Lots more info on this feature here: https://help.ethn.io/hc/en-us/articles/204165454-Limiter-Create-an-Automatic-Shut-Off-Limit