Suddenlink.net is currently not a ShuttleCloud supported provider.
We have investigated whether Suddenlink.net allows you to export contacts but have not found a relevant help article. I investigated the following FAQ: http://help.suddenlink.com/knowledge/webmail-addressesand but it provides no mention of exporting .CSVs. Can you confirm if Suddenlink allows you to export CSV files?
If the answer is yes, please follow these steps in order to transfer your Suddenlink contacts into Gmail:
1.Go to Google Contacts.
2.On the left, click More and then Import.
3.Click on Choose File to select the appropriate CSV or vCard file.
4.Go to the old Google Contacts version.
5.In the old version, from the More menu, click Import and upload your file.
6.Come back to Google Contacts and refresh your browser.
In order to save the contacts to the desired file type, please get in touch with the respective domain support for further assistance.