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POP3Īs we already mentioned, both of these protocols relate to email retrieval. In short, thanks to IMAP and POP3, you are able to receive emails, and SMTP allows you to send messages. As this is the protocol handling the email sending from an email account, it is labeled as the outgoing protocol. On the other hand, the Simple Mail Transfer Protocol is behind the message transfer from server to server, or mail client to server. Thus, they are considered mail access protocols. POP3 and IMAP are handling the incoming emails and they operate in different ways to retrieve or access your email messages. What is the difference between SMTP, POP3, and IMAP? Incoming vs.

Port 993 is the secure port for IMAP and it works over TLS/SSL encryption.

143 – this is the default port which does not provide any encryption.

The encrypted port for POP3 is 995 and works over TLS/SSL.īy default IMAP works on two ports like POP3:.

Port 110 is the default POP3 port and it is not encrypted.

Port 465 works over an implicit SSL connection and if the server does not support it, the operation will be aborted.

However, if the email server does not support TLS, the message will be sent in plain text.

587 – This is the port IANA registered as the secure SMTP port, and it requires an explicit TLS connection.

Port 2525 is an alternative to the SMTP port 25 and can be encrypted over TLS.

Therefore, many Internet service providers block it, as it represents a security risk.

25 – This port serves to send messages in plain text, although if the mail server supports it, it can be encrypted with TLS.

The available SMTP ports are four and each of them underlies a different type of encryption for email sending. These attributes are assigned by IANA ( Internet Assigned Numbers Authority).Įach protocol has its own port numbers to connect through and each port supports a different type of encryption. To establish a connection between your email client and your mail server, you need the latter’s IP address and a port number. That includes whether a message should be encrypted and exchanged securely. Default email portsĮmail ports are communication endpoints that define how a message should be transmitted. IMAP supports the connection of multiple users to a single mail server. By default, all messages remain on the server until the user specifically deletes them. It also gives you the option to set or remove email flags, or fetch email attributes selectively. This protocol permits you to manipulate folders, permanently delete and efficiently search through messages. The Internet Message Access Protocol ( IMAP) allows you to access and manage your email messages on the email server. Modern POP3 clients allow you to keep a copy of your messages on the server if you explicitly select this option.

#Imap webmailer Offline#

Thanks to this protocol, you are able to access the messages locally in offline mode as well. Then it stores them on your local computer and deletes them from the remote server. Thus, when a POP3 client connects to the mail server, it retrieves all messages from the mailbox.

#Imap webmailer download#

It executes the download and delete operations for messages. The POP3 abbreviation stands for Post Office Protocol version 3, which provides access to an inbox stored in an email server. Thanks to the Simple Mail Transfer Protocol, messages can be sent from the same account on different email applications. Both entities are using SMTP commands and replies to process your outgoing emails. This protocol is used by email clients and mail servers to exchange emails between computers.Ī mail client and the SMTP server communicate with each other over a connection established through a particular email port. SMTP stands for Simple Mail Transfer Protocol, and it is responsible for sending email messages. Each of them operates differently and provides a different service for managing your email account. The standard email protocol list includes SMTP, POP3, and IMAP. Moreover, these mail protocols allow you to access and manage your emails from various email programs and devices. Thanks to them we are able to send and receive emails from different machines, networks, and operating systems. In fact, there is a list of email protocols that handle email transactions. What is an email protocol?Īn email protocol is a group of rules which ensure that emails are properly transmitted over the Internet. Read on to see which configuration will best serve your particular email needs.

Each of them has a specific function and mechanism. In this article, you will find the most common Email protocols explained – POP3, IMAP, and SMTP.

This way, they allow us to send and receive messages over the network correctly. The email protocols define the mechanism of the email exchange between servers and clients.

What is the difference between SMTP, POP3, and IMAP?Įmail is an essential part of business and personal communication online.