Planhat can take up to 10 minutes to sync emails and a bit longer on the first sync, so if you've just synced give it a little bit of time before you see emails from your account :).
However, if after the initial period of time you're still not seeing emails from your account it could be that there are no mailboxes checked in your user settings for Planhat to sync.
To fix this:
- go to your user profile
- go to the tab at the top that says "EMAIL"
- specify which folders you'd like Planhat to sync emails from where it says "SYNCED FOLDERS"
- then click save
If this doesn't get your emails syncing, it could be you need to follow different steps. You can find those steps here.