Here is how to check if IMAP is enabled:
For Gmail individual accounts
- Log into your Gmail account at https://mail.google.com.
- Go to your Gmail settings, select “Forwarding and POP/IMAP” (the direct link should be https://mail.google.com/mail/u/0/#settings/fwdandpop).
Please verify the following:
- Enable IMAP should be selected.
- Do not limit the number of messages in an IMAP folder should be selected:
For Google Apps email accounts
- Please check with your Google Apps Admin
- Here is how to check: https://support.cloudhq.net/how-admin-can-enable-imap-for-google-apps/.