I still can't or reply to emails on my android , it keeps moving it to outbox and say couldn't send.
I tapped on storage and cleared data and it still doesn't let me send email.
You probably should log in to webmail and check your storage there. Click on the gear icon and it will tell you how much storage you're using.
Remove your email account from your device. Then add your email account to your device and it should enter the latest and correct incoming and outgoing ports and settings.
If your problem is with a Comcast.net account, be sure to set it up as a IMAP account, not a POP legacy account. You may have to go to webmail to convert your account.