Exactly what does email-decode.min.js do?
It obfuscates (scrambles) email addresses in HTML to prevent bots from scraping them from your site.
https://support.cloudflare.com/hc/en-us/articles/200170016-What-is-Email-Address-Obfuscation-
So any “mailto:” in a href on the page triggers inclusion of this js in what’s sent to the viewer?