For example if I send an email from my home IP address, people can see my location of where I am when I sent the email. If I used a VPN, and changed the location, people will think my device was in a different place than it actually was but in an email can give away that it was my actual device that sent the email?

edit: let's say I create an email and send an email, or create a website and post on the website, besides my IP address, what else gives away the device/location I am posting/writing from?