Next, it checks the email header for relevant information about the sender and the recipient’s address. How Does Sending and Receiving Emails Work?Īn email message travels through at least two main SMTP servers that belong to the senders and the recipients.įirst, SMTP connects your client with your email provider’s server. Port 465 – SSL/TLS port, also known as SMTPSĬontinue reading this POP3 vs IMAP article to see what happens behind the scene when you send and receive an email.It regulates the limit of how many messages an account can send within a time frame. It works side-by-side with a software called Message Transfer Agent (MTA) to transfer electronic messages to their correct destinations.Īside from sending emails, this protocol also acts as a safeguard to filter which message passes through. Simple Mail Transfer Protocol ( SMTP) is used to send emails from a local client to a recipient’s address. Now that we have learned about the incoming protocols, POP3 vs IMAP, let’s take a look at the one used to handle outgoing emails. Port 993 – SSL/TLS port, also known as IMAPS.Default IMAP port that IMAP connection uses: The email account’s storage space limit can also pose some issues to your messages, especially if you use it with high intensity. However, you need to have a stable internet connection to gain full access to all the emails stored in the IMAP server. Another perk of using IMAP is the ease of finding a specific message using a keyword. This configuration is recommended for those who want to interact with their email messages across multiple devices, so you don’t have to worry about losing important ones should a device is broken or stolen. This protocol also syncs whatever changes are made on the email client to the server, hence the two-way communication. IMAP ( Internet Message Access Protocol), as opposed to POP3, is a two-way incoming mail protocol that only downloads email headers instead of its entire content.Īs a result, the actual email messages are still kept on the server after being fetched for viewing, making them accessible from another platform. Port 995 – SSL/TLS port, also known as POP3S.Default POP3 Port to establish a connection with an email server: So if the device that stores the messages is lost or broken, you could lose all of the ones you’ve saved. Keep in mind that this protocol cannot sync the content of your offline inbox with its online counterpart by default. It’s also useful for those who want to free up an inbox’s space that almost exceeds its capacity. In general, we recommend this setting for people who only use one device to access emails and want to view their messages offline. However, many providers these days give the option to keep the original copies intact, allowing users to see the same content when accessing messages from a different platform. Once the post office protocol completes the process, it deletes the original data from the server’s inbox. POP3 ( Post Office Protocol version 3) is a one-way incoming mail protocol that downloads a copy of messages from an email server to a local machine. Even though they serve the same function, they do have several differences. The client can be application-based like Thunderbird or web-based like Gmail, Yahoo!, or Google Workspace’s email. IMAP, on the other hand, is better for those who access their email from multiple devices and want to keep their emails synced and up-to-date across all devices.Īdditionally, IMAP allows users to manage their email folders and labels directly on the server, while POP3 requires users to manage their folders locally. This means that POP3 is better suited for those who primarily access their email from a single device and don’t need to keep their emails synced across multiple devices. The main difference between POP3 and IMAP is that POP3 downloads emails from the server and stores them locally, while IMAP syncs emails across multiple devices and keeps them stored on the server. What’s the Difference Between POP3 and IMAP?
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