Can I pass parameters into a form, by including some in a URL when sending forms to different people

For instance can I automatically fill out their name based on who i sent the URL too, by adding extra parameters to the URL.

Yes, that is possible here in JotForm. Please check the complete guide on the link below:

https://www.jotform.com/help/71-Prepopulating-Fields-to-Your-JotForm-via-URL-Parameters

Please give it a try and if you have any questions, please let us know. Thank you.