These additional features include the capability to sync and view folders. It is a proprietary technology from Microsoft which uses RPC-based communication to interact with a MAPI-based mail server like Exchange. This protocol is quite the same as IMAP protocol with some additional features. MAPI stands for Messaging Application Programming Interface.
#Exchange client mapi Offline#
IMAP4rev1 allows manipulation of mailboxes and also allow an offline client to resynchronize with the server. It provides the facility for selective message downloading and deleting, downloading of headers, multiple mailboxes and more. The downside of IMAP is that it requires more resources (more disk space on server and more CPU resources). It also provides the facility for multiple accesses to the same mailbox. They remain available in the server till the client deletes them. IMAP provides the facilities of email storage. Initially, it was developed as a remote mailbox protocol in 1986 by Mark Cripsin. It is an application layer email protocol. It is a mail protocol that is used to access email messages on a remote web server from a local client. IMAP stands for Internet Message Access Protocol.
MAPI stands for Messaging Application Programming Interface. MAPI is based on a proprietary technology from Microsoft which uses RPC-based communication to interact with a MAPI-based mail server like Exchange. It can work on even a slow connection like modem. The emails that are received are kept by the Internet server. IMAP was originally developed in 1986 at Stanford University. Key Difference: IMAP stands for Internet Message Access Protocol.