Well, this sucks. No more than a handful of people ever use the email link in my eBay listings (it's been there for over a decade), but this means having to spend hours editing all my templates.
Here's the warning that popped up today:
"We've noticed that your listing included an email address. Starting on October 1, eBay will no longer permit email addresses in listings, whether they are clickable or not. Please be sure to remove email addresses from your listings."