Delta Sync

Delta Sync

DeltaSync is a proprietary Microsoft communications protocol for synchronizing web services with offline clients. Windows Live Hotmail is exposed to offline clients using DeltaSync; Outlook Connector and the Windows Live Mail client use it for offline access. Microsoft is pushing for this protocol instead of POP3 or IMAP4 for supporting various advanced features, like contacts, calendar, and notes synchronization. Using the DeltaSync protocol, Microsoft intends to provide a common platform for any compatible device to implement a client which can two-way synchronize mail, contacts, calendar, and notes.