Gmail Sync is ON Opens the Accounts & Sync screen to modify your sync settings for this account, or remove this account.
Days of mail to sync Opens a dialog box to set the number of days of mail to sync. Modifying this setting affects the sync download in the Ringtone & vibrate setting.
Manage labels Opens a dialog box to set which mail labels are synced.
Download attachments Mark the checkbox to automatically download attachments to recent messages using a Wi-Fi connection.