URL Parameters

Is there already a way to use URL parameters to auto fill form data. I tried but it didn't work and I would LOVE the ability to send a group email that sends them to a registration page with the data autofilled. If there was also a way to auto submit the registration that would create amazing flexability.

Imagine this as an example

The registration asks for name and email

webinarlink.com?fname=Steve&email= test@test.com

This would load the registration page with the above data prefilled

AND

Then also having the ability for this

webinarlink.com?fname=Steve&email= test@test.com&submit=1

This would fill in the details and auto submit the form redirecting the user to the thank you page

This way I could have a button on my website and when a user clicks it I could automatically register them for a webinar. I could also do the same from an Email without making them enter details.

This would be a very useful feature that I see in two parts

1, Add autofill form data
2, Add auto submit
3, Add custom thank you page URL after submission