Keychain issues...cannot send or receive email
I kept getting pops asking for passwords. I read that this was an issue with the keychain and it suggested resetting the keychain and gave instructions on doing so. I did this. Now, not one of 30+ email addresses, regardless of server, can send or receive emails. I have re-entered passwords on a couple of email addresses to test things, to no avail. I even changed the password on my host where the email address is set up and entered them into Mail, to make 100% sure that the password I entered was correct. Nothing.
I have also removed the folder from the keychain folder, after holding down the option key and selecting LIBRARY from the GO menu. I put the folder on my desktop, restarted the computer, re-entered the password in the IN/OUT servers of two email addresses and still nothing.
Anything I've googled comes up as some other issue and I cannot find a solution to this specific problem. Any help is greatly appreciated! Thank you in advance!
I am using Apple Mail 7.3 on OS X 10.9.5 Mavericks