Yes. You can transfer your email data from your Comcast to your AT&T account. Just ask your customer service agent after AT&T account sign up. He will do it for you easily and quickly. You can also do it for yourself, download a program from internet that can easily transfer your data
from your old Comcast account to your new AT&T account.
Transfer support provide users to search answer of question Transfer Messages Comcast AT&T. Telecom helping guide present useful webpages related to Messages Comcast listings along with complete step by step Transfer screenshots, Messages videos, Messages links and support. So feed free to browse Transfer Messages Comcast AT&T support search links.