[Plugin: Contact Form 7] How to make my CF7 remember last field's input

Found old topic on this issue, but no replies there:
https://www.ads-software.com/support/topic/plugin-contact-form-7-saving-form-data-into-a-cookie

Saving form data into a cookie

I am looking for a way to save form data into a cookie.

Now people fill in the form with their names and emailadres, and I would like to save that into a cookie so it will automatically remember them, and fill in those fields for them.

I dont mind a bit of coding myself so if you have any suggestion I appreciate it.

Thanks!