Mailto Links in HTML Email verursachen Sicherheitswarnungen bei Outlook.com

Just the other day, one of our customers reported that the mailto link in their email campaign wasn't working. While we've previously heard of email clients disabling them, the issue turned out to be a little more pronounced than we assumed.

Mailto links have never really been an ideal way to collect responses to an email campaign. Contact forms, or simply being able to click 'Reply' to an email are by far preferable to creating a new email message... Not to mention, trackable. Nonetheless, they continue to be used because they're easy to personalize and add to HTML email code...