Client/Server EmailFollows 3 Main Models
Offline (POP3 model)
- Client connects to server and pulls all email down to client
- Everything is stored on the client
Online (Original IMAP model)
- Client connects to server for every transaction
- Everything is stored on the server
Disconnected (Later IMAP model)
- Client and server share storage burden
- Server is always authoritative and client must synchronize to server