My wife's Comcast email has stopped/frozen 5 times over the last year. Each time we wasted untold hours describing what we were seeing (which was a blank email screen/window) to Comcast "tech support" and following their useless "fixes" only to finally be "escalated" to a " hihger level" of support. After escalation, we again wasted time re-explaining what we were seeing (no emails) on several laptops, PCs, and smartphones...etc, etc, etc. Each time the "escalation team" had no answers and "escalates" our issue to "the engineers" via creation of a trouble report (a CR###### ) that someone in "engineering" responds to and attempts resolution. Five times, this process resulted in our waiting for several days for email service to return...4 times noone called to explain why service was interrupted/denied. One time someone called to tell us that it will never happen again...3 days later it happened again. This last time, we have insisted that we be called by a supervisor who can tell us what the Cause(s) has/have been. A "supervisor" did call, but had no reasonable explanation...in fact, he told me that the Cause was my wife's USERID....as you know, the USERID is checked by Comcast's system upon creation to ensure fidelity with their system....my wife's Comcast USERID was created 15 years ago and she has received thousands of emails with it. The simple truth is either Comcast is a) unable to explain, or, b) unwilling to explain why they cannot provide uninterrupted email service. If your email is important to you, suggest looking elsawhere for service.