Email SuddenLink customer service help at this email address for the fastest reply. Click to indicate what problem you are emailing about and we can share our best customer recommended talking points to include in your email so you get a faster reply and better results. This is the best email address for SuddenLink customer service. This information is according to users who are also SuddenLink customers over the past 180 days. Email can be a convenient way to communicate with customer service; you can multi-task while you are doing it, and you may already be checking your inbox frequently anyways. But more often than not, SuddenLink customers want to talk to a real live being as soon as possible and check it off their to-do list.