This can happen if your device gets out of sync with the online server that is tracking our phone policies.
To fix this you will need to uninstall the device management profile from your phone and then re-register the phone in the company portal.
To accomplish this please do the following:
- Go to Settings
- Go to General
- Go to Profiles or Device management depending on what iOS version you are running.
- Find the management profile and delete it.
- Go to Company portal and launch the application.
- You will then be prompted to login and re-register your device.
- Go through the setup steps as instructed in the app and upon doing so email will again work.
- Restart your phone.
If you still have issues then please contact SupportTeam.