Slingshot is currently migrating MailControl to a new and improved engine for better filtering, features, interface, and speed. For smooth transition, we're moving domains in small batches, and will contact you soon with your particular cutover date and an updated User Guide.
In the meantime, please continue using MailControl.slingfive.com. During this transition time, it will temporarily bring you to this landing page. Once complete, it will go directly to the new MailControl.