When you account is set up, the initial synchronization from the account to the Zimbra Desktop starts immediately. The initial sync could take several hours if you have a large mailbox or use a slow network connection. You can work in Zimbra Desktop while your account is being synced.
Important: Before you start the sync to download your messages, make sure you have enough disk space.
For the Zimbra Web Client account, all email folders, address book, and calendar, including those you created, are downloaded to the Zimbra Desktop. Tags you have created and searched you have saved are also synchronized.
For Yahoo Mail accounts and Gmail accounts, the Inbox, Sent, Draft, Contacts and Calendar are synchronized to the Zimbra Desktop. Your Trash and Spam folders are not synchronized.
For AOL, Live Hotmail, and other IMAP or POP accounts, the Inbox, Sent, Draft, folders are synchronized to the Zimbra Desktop. Your Trash and Spam folders are not synchronized. If you created other email folders, they are not synchronized initially, but you can sync these folders individually. Contact lists, and calendars are not synced to Zimbra Desktop.
After the initial synchronization, Zimbra Desktop runs in the background to always synchronize data with your remote accounts. The schedule you set up determines how often Zimbra Desktop syncs to your account. This background service continues to run after you close the Zimbra Desktop window as long as you have access to the internet.
When you start your computer, Zimbra Desktop automatically starts and the background service synchronizes your account data. For accounts other than the Zimbra Web Client account, if you do not want folders to automatically sync, you can turn off sync.
If the network connectivity is lost while the data is synchronized between Zimbra Desktop and the server, when connectivity is restored, the sync resumes where it was interrupted. No data is lost because of the disruption.