Every website we craft at work has some email substitution logic so that addresses you see on the site don't actually exist in the HTML source like that (you wouldn't find them in a format like "foo@example.com").

Instead the @ and the period right before the TLD get replaced with something else (to prevent (dumb) spam bots from using that address and blast it with junk).

Some people replaced them with images in the past (ew), replaced the @ with "(at)" or other stuff.

I made it a habit to render the @ and . by replacing them with span tags which then get a ::before in CSS that contains "content: '@';", so that the @ is visible but is not actually inside the HTML source code.

The classes for these spans then have a random name (persistent for that website though). The first one was called "move-along-nothing-to-see-here", but then I started naming them after Star Wars quotes.

One website's @ class is called "that-s-no-moon" (Obi Wan), others are called "i-have-a-bad-feeling-about-this" (Han Solo), "powerful-you-have-become-the-dark-side-I-sense-in-you." (Yoda) and "these-are-not-the-droids-you-are-looking-for" (Obi Wan).