Search Hover Panel to Preview Emails in a Library?

Hey Folks,

Has anyone ever created an Item HovelPanel to account for previewing emails when using Search in 2013/2016 or online? So create a similar experience to what you see for the office web apps previews like work or excel?

I'm thinking I might just have to show meta data in the hover panel vs a preview? But if anyone has cracked this - it would be great to know its possible!

Thanks!