Please find the below steps to access the Email Hosting (Zimbra)
1) Login to client area
2) Click services
3) Select the Email Hosting services
Method 1: access without entering username and password
Click email accounts
Click more actions and scroll down (with keyboard PageDown key)
Thats it! You are in.
Method 1: Access by entering username and password
Go back to step 3
Click go to Webmail