Where do email go, while they are lost in cyberspace

I recieved an email just a couple of hours ago, that was sent at 11.37 am this morning, and just arrived at 4.22 am the following morning, so where do these emails go while they float around cyberspace, do they stop off somewhere, for coffee, do they just bounce around in cyberspace, traveling the world over serveral times, it's sort of a shame that emails don't have a properties section where you can check wg\here they have been, a tracking system.

Best Regards Lynny Brown -
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