I would like to change the reply-to: email to automatically get filled in with the "From:" email-address

I do not mind the via jotmails.com tag in gmail, however I would like to somehow make this seem like an organic referral email coming from my target's customer.

I understand how to change the reply-to address to 1 static option, however I would like this to be dynamic and change with each submission automatically to the "From:"

So is there a way to make the "From:" email somehow appear as the "Reply-to:" email address (even with via jotform) when the recipient receives this email in their inbox?

You can set up the reply-to email to get filled in with a from an email address by simply setting the email field to be used in the email notification on your form.

For the autoresponder on the other hand, though you will have to grab the matching field tag and insert it there.

This guide here https://www.jotform.com/help/30-Explanation-of-Email-Notification-and-Autoresponder-Settings can help you more as well.