For Online Computer Support, Ask a Computer Technician
Hello, welcome to JustAnswer my name is ***** ***** I'm one of the experts who will be assisting you today.You can add the Comcast account to Outlook as IMAP so all the emails download to the computer, then when the account gets closed you'll still have a copy of them on the computer.Do you know how to do that or do you need remote help?Please reply using the box below.Regards,Martin
Yes, with IMAP the whole lot, including subfolders get downloaded - remote help means I connect to your computer and set it all up for you
Alternatively you can do it on your own, take a look here:http://www.engadget.com/2013/11/18/how-to-set-up-comcast-imap-email-on-ios-7-os-x-mavericks/
Were you able to do that?