OK, very quick confirmation there that it is probably something to do with Microsoft Exchange. Subscribing using an email hosted by Fastmail got me the confirmation email instantly. Work uses Office 365 to provide email, and we access it using the Outlook Web App or Microsoft Outlook software. --- [Visit Topic](https://discourse.ros.org/t/ros-users-unsubscribe-function-broken/2639/7) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: