I'm working on an open source project to overwrite the classic behaviour of
mailto links in the browsers. It's called mailgo and it shows a modal with more possibilities for the user, like for example to copy the email address or open it in Gmail... It can be installed though
yarn, script on CDN or downloading the script. It's WIP but there is a working demo on https://mailgo.js.org.
CodePen with a demo: https://codepen.io/manzinello/pen/RmeQEr
WordPress plugin: https://wordpress.org/plugins/mailgo/
What do you think about?