When a subscriber is using Hotmail, Yahoo!Mail or TDC Webmail, and marks your newsletter as "Junk", Ubivox receives a notification stating that a subscriber has "complained" about receiving the newsletter. The subscriber is then, automatically, suspended from the list. This guide elaborates complaints and how they are handled in Ubivox.
The subscriber control panel in Ubivox, gives you access to include a link in the newsletter, that the subscriber can click on to update their contact information in Ubivox. This guide exemplifies the process and elaborates why additional subscriber information can be relevant.