Sometimes you want to add external data to your funnel, for example a customer id or email. With UpFunnel you can pass that data right into the url and use it in your funnel. It will be saved to your responses like any other response.
To add the data, all you have to do is add a url param with the prefix prefill_ to the url. E.g. https://share.upfunnel.co/cmc1lhjuw007hph01w8izbcr4?prefill_name=john
In this case we defined the variable prefill_name and it can be used in the funnel and will be saved in the responses. You can use any single word after the prefix prefill_ to create your own variables. E.g. prefill_email, prefill_userid, etc.
