i’d probably go with robert F R at N K E L .com. as somebody with an email on my own domain, i will say it is a hassle, especially because my surname can be spelled one of two ways, and i have the less common spelling. i also chose email@firstnamelastname.com, and having “email” as the first part really throws some people for a loop.

if you’re applying for jobs in the tech world, i don’t think anybody would bat an eye.