I am having the same issue and Cox Tech Support - minus one person - has been of no help. I have spoken with 12 different Cox People this week and no luck. I am getting so sick of Cox Lack of Communications. I cannot send an email to anyone with a cox.net email address from my outlook or phone app. I can from my webmail. Tech Support then says it's not them. yeah right? If I was to call Outlook tech support and tell them, it doesn't work on my non outlook phone app either, they would say it's a Cox issue...because it is. Same if I was to call my cell phone company. The one common denominator is Cox Lack of Communications. Good Luck with your issue. It has been extremely frustrating for me.