Comcast email not syncing
my comcast email on my iphone is not syncing with comcast web server
Question marked as
If you're talking about Apple Mail app, and if you're sure that you are using the correct outgoing/incoming parameters SMTP/IMAP or POP3 (contact your email provider support team and check those parameters with them), delete your email account on iPhone in Settings>Mail>Account, then restart your iPhone, and in the end re-add the same email account.
If you're talking about a Comcast app, please contact Comcast support team.
Regards
Giulio