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Shlomo Freund
I help remote workers organize their money to reach financial freedom faster
Asked a question 2 years ago

I have a 3rd party form on my website. I want to link to that form from a newsletter in convertkit. On that form I ask for the persons's email address. However, since the user is coming from convertkit newsletter I ALREADY know their email address. So, would like that to be auto filled and passed as a parameter to the form through the link. Is it possible? And if so, how do I do that? Thank you!

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WordPress Designer, Blogger, Infopreneur

You can set custom fields in ConvertKit to help request for same information from your subscribers during sign-ups. 


However, ConvertKit forms uses plain text for their forms and therefore might not serve a specific purpose like date of birth, or any date will serve as plain text.


Here's an article on how to create a custom field

Hey @Shlomo Freund55, it's not currently possible to auto-populate ConvertKit form fields with URL parameters, but I can't speak for 3rd party forms' capabilities. 

In any case, if the subscriber is coming from a link in a ConvertKit email, you should be able to use the {{ subscriber.email77_address }} shortcode in the URL and that shortcode will automatically change into the email address of the recipient once the email is sent.

However, I'm not sure what URL format the 3rd party form would require to actually populate the form field, or if that's even possible — I'd suggest reaching out to your other form provider for more guidance on that part of things.

Of course, let us know if there's anything else we can help with from our end :)

Matthew M.
Owner -

Hi Shlomo,

If you're still looking for a solution, I coded one for my own site using javascript. It's really simple to embed in any web page and it will automatically pull the email address from the query string in a URL.

The format I used was:

You can find the code snippet and URL formatting in my answer54 to a related question.