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Difference between POP3 and IMAP

Difference between POP3 and IMAP

POP3 and IMAP are the protocols used to retrieve mail from the mailbox on the mail server on the recipient's computer. Both are agents who access messages (MAA). The two POP3 and IMAP protocols are used when the sender and recipient of the mail are connected to the mail server through WAN or LAN . SMTP transfers mail from the client computer to the mail server and from one mail server to another mail server. POP3 has limited functionality, while IMAP has extra functionality on POP3.

The fundamental difference between POP3 and IMAP is the one it uses POP3 ; the user must download the email before checking its contents, while the user can partially check the contents of the mail before downloading it, using IMAP . Let's see other differences between POP and IMAP with the help of the comparison table.

Comparative chart

Basis for comparison POP3IMAP
Basic To read mail, it must first be downloaded. The content of the mail can be partially checked before downloading.
To organize User cannot organize mail in the mail server mailbox. The user can organize the emails on the server.
Folder User cannot create, delete or rename mailboxes on a mail server. User can create, delete or rename mailboxes on the mail server.
Satisfy A user cannot search for mail content for the previous download. A user can search the mail content for a specific character string before downloading.
Partial download The user must download the mail to access it. User can partially download mail if bandwidth limited.
functions POP3 simple and has limited functions. IMAP is more powerful, more complex and has more functionality on POP3.

Definition of POP3

Post Office Protocol version 3 (POP3) a message accessing the agent (MAA) which transfers the email from the mailbox on the server to the user's local computer. There is software POP3 client that installed on the recipient's computer. The POP3 client is invoked by the user who then creates the connection to the POP3 server.

The software POP3 server installed on the mail server. The connection is made on the port TCP 110 . To establish the connection the client must send username is password to access the mailbox. Once the client has been authenticated, it can then list and retrieve the emails one by one.

The POP3 protocol operates in two ways, the cancellation procedure and the maintenance mode . POP3 protocol works in method of elimination when the user is working on his permanent computer . In delete mode, once mail is recovered from the mailbox, it is permanently deleted from the mailbox. The mail recovered from the mailbox organized on the user's computer.

POP3 protocol works in keep mode when the user not It is working on his permanent or primary computer . In maintenance mode, the mail remains in the mailbox even after it is recovered. Mail is read by the user, but is kept in the mailbox for later retrieval and organization of mail on users' permanent computers.

Definition of IMAP

IMAP (Internet Mail Accessing Protocol) also a mail access agent like POP3. But more powerful, it has more functionality and more complex than POP3. The POP3 protocol has been found lacking in many ways. Thus IMAP is introduced to overcome these shortcomings.

POP3 does not allow a user to organize mail on the mailbox. The user cannot create different folders on the server. The user cannot partially check the contents of the emails before downloading them. The user must download an email to read it, in POP.

IMAP is used to access mail from the mailbox on the mail server. Using IMAP the user can control the email header before downloading it. The user can check the contents of the email for one particular character string even before downloading the email.

In case the bandwidth is limited, using IMAP the user can partially download the mail. useful if the email contains multimedia content with high bandwidth requirements. User can create, delete or rename mailboxes on the server. The user can also create a hierarchy of these mailboxes in a folder. This makes IMAP more powerful than the POP3 protocol.

Key differences between POP3 and IMAP

  1. The fundamental difference between POP3 and IMAP that using the POP3 protocol the user must download the mail before accessing it while, using the IMAP protocol user, it is possible to check partially the contents of the mail before downloading it.
  2. Using the IMAP protocol user possible organize email on the server that cannot be done using POP3.
  3. Using the IMAP protocol the user can create, delete or rename mailboxes, even if the user can create one mailbox hierarchy in the folder, but POP3 cannot be used.
  4. POP3 does not allow you to search for mail content for one particular character string before downloading, while, using the IMPA user, you can search the content of an email for a specific string of characters before downloading.
  5. IMAP allows a user to download the mail partially in case of limited bandwidth. However, this feature is not available in POP3.
  6. POP3 simple and has limited functionality, while IMAP powerful, complex and has extra functions on POP3.

Conclusion:

Bothe POP3 and IMAP are the message access protocols. But IMAP is more powerful and has many advanced features on POP3.