Suddenlink Email app is nothing but you can use the Gmail app on your android/IOs mobile. Through Gmail, you can set up your Suddenling email account very easily. The steps are described in this blog.
Go to the Gmail app in your device and click on 3 dots settings
click on add account and choose another option.
type Suddenlink email id and password
Now click on POP account settings.
Fill your email inside the Incoming server setting and type the password.
Now type In POP server pop.Sudenlink.net.
In the SMTP type smtp.SuddenLink.Net
Now follow all settings and that's it. For more detail, you can read this blog
webxanga.com/suddenlink-net-email-login/