Can you clarify----------you deleted email addresses from where? Do you mean you deleted contacts from the address book? Do you mean you deleted a Comcast secondary address you had or what?
I deleted contacts out of my address book and I am looking for a way to get them back if possible.
Then I have to say no. If you deleted them there is no way to get them back. In the old format, you had backups, but that feature is no longer available in the new format.