IMAP ( INTERNET MESSAGE ACCESS PROTOCOL ) was Published in 1986.
VERSIONS :
1. Original IMAP
2. IMAP 2
3. IMAP 3
4. IMAP 2 bis
5. IMAP 4
IMAP is used to send Messages without downloading.
The E-mail is hold and maintained by the remote server.
In this Protocol, the actions can taken like downloading and deleting the mail without reading.
It allows concurrent access to multiple mailboxes on multiple mail servers.
IMAP COMMANDS:
1. IMAP_LOCATION - This Command open the connection
2. CAPABILITY - This command requests for listing the capabilities that the server supports.
3. NOOP - This command is used as a Periodic poll for new messages or message status updates during a period of inactivity.
4. SELECT - This command helps to select a mailbox to access the messages.
