POP and SMTP - What are they? (2024)

POPand SMTP are the two protocols which take care of theemail flow(send and receive respectively) on the internet.

SMTP (“Simple Mail Transfer Protocol”) is used for sending and delivering from a client to a server viaport 25: it’s the outgoing server. On the contrary, POP (“Post Office Protocol”) allows the user to pick up the message and download it into his own inbox: it’s the incoming server. The latest version of the Post Office Protocol is named POP3, and it’s been used since 1996; it uses port 110.

Toset up a mail clientit’s necessary to configure both SMTP and POP providing their settings. Here’s an example with Mozilla Thunderbird (“Outgoing server” item, selected from “Account settings” in the “Tools” menu):

POP and SMTP - What are they? (1)

Below you find a list of theSMTPandPOP/POP3 namesfor the most common email providers.

Of course, if you need to send abulk emailor anemail campaignyou should opt for aprofessional serverliketurboSMTP. Matter of fact,while “normal” SMTPs are based on widely shared IPs (affecting in a negative way yourdelivery rate), a dedicated outgoing service will rely only on controlled ones. Ensuring that all your messages reach their destination.

PROVIDER

URL

SMTP

POP / POP3

1&1

1and1.com

Smtp.1and1.com

Pop.1and1.com

Airmail

Airmail.net

Mail.airmail.net

Pop3.airmail.net

AOL

Aol.com

Smtp.aol.com

Pop.aol.com

AT&T

Att.net

Outbound.att.net

Inbound.att.net

Bluewin

Bluewin.ch

Smtpauths.bluewin.ch

Pop3.bluewin.ch

BT Connect

Btconnect.com

Mail.btconnect.tom

Pop3.btconnect.com

Comcast

Comcast.net

Smtp.comcast.net

Mail.comcast.net

Earthlink

Earthlink.net

Smtpauth.earthlink.net

Pop.earthlink.net

Gmail

Gmail.com

Smtp.gmail.com

Pop.gmail.com

Gmx

Gmx.net

Mail.gmx.net

Pop.gmx.net

HotPop

Hotpop.com

Mail.hotpop.com

Pop.hotpop.com

Libero

Libero.it

Mail.libero.it

Popmail.libero.it

Lycos

Lycos.com

Smtp.lycos.com

Pop.lycos.com

O2

o2.com

Smtp.o2.com

Mail.o2.com

Orange

Orange.net

Smtp.orange.net

Pop.orange.net

Outlook.com (former Hotmail)

Outlook.com

Smtp.live.com

Pop3.live.com

Tin

Tin.it

Mail.tin.it

Pop.tin.it / Box.tin.it

Tiscali

Tiscali.co.uk

Smtp.tiscali.co.uk

Pop.tiscali.co.uk

Verizon

Verizon.net

Outgoing.verizon.net

Incoming.verizon.net

Virgin

Virgin.net

Smtp.virgin.net

Pop.virgin.net

Wanadoo

Wanadoo.fr

Smtp.wanadoo.fr

Pop.wanadoo.fr

Yahoo

Yahoo.com

Mail.yahoo.com

Pop.yahoo.com

POP and SMTP - What are they? (2024)

FAQs

POP and SMTP - What are they? ›

SMTP is a push protocol, while POP3 is known as a pop protocol. SMTP sends the email from the sender's device to the receiver's mailbox, and POP3 retrieves and organizes emails from the receiver's mail server to the receiver's computer.

What is SMTP and POP? ›

SMTP is a push protocol, while POP3 is known as a pop protocol. SMTP sends the email from the sender's device to the receiver's mailbox, and POP3 retrieves and organizes emails from the receiver's mail server to the receiver's computer.

What is POP vs IMAP vs SMTP email? ›

Summary of the SMTP, IMAP, and POP3 Email Protocols

An SMTP relay service can help you send email without having to build your own SMTP server. IMAP is one of the most common protocols for receiving email. IMAP syncs messages across all devices. POP3 is another protocol for receiving email on a single device.

What is the difference between Gmail POP and SMTP? ›

SMTP settings allow you to send emails to other email service providers. POP settings in Gmail do the opposite. In short, it allows you to receive emails from email service providers like Outlook and any email client. POP stands for Post Office Protocol.

What is a POP server for email? ›

POP, short for the Post Office Protocol, is used to sync email from Gmail to any compatible mail client, such as Outlook, Thunderbird, or Apple Mail. Like IMAP, POP is not a Google product; it's a standardized, RFC-compliant protocol that any email service or client can choose to be compatible with.

Should I use POP or SMTP? ›

SMTP (“Simple Mail Transfer Protocol”) is used for sending and delivering from a client to a server via port 25: it's the outgoing server. On the contrary, POP (“Post Office Protocol”) allows the user to pick up the message and download it into his own inbox: it's the incoming server.

Is Outlook A SMTP or POP? ›

Outlook.com supports IMAP / SMTP.

How do I know if my email server is POP or IMAP? ›

You can find out by checking the settings for your email app – usually, it will state whether it's POP or IMAP under your email address, or in the 'server settings'. Alternatively, another way to access your emails is through webmail in an internet browser such as Google Chrome, Apple Safari, or Microsoft Edge.

Which is safer IMAP or POP? ›

IMAP is more secure compared to POP3 if you care about data loss. IMAP creates several copies of your email and stores them on a remote server. So you can access them even when your local server is lost.

How do I know if email is POP or IMAP? ›

The instructions below should help you with most versions, but the screens may differ slightly.
  1. Go to Settings scroll down to the Accounts section and select your email account.
  2. Select Account Settings.
  3. Select the account you want to check.
  4. Scroll to Server Settings and select Incoming settings.
Apr 26, 2017

Should I use POP or IMAP for Gmail? ›

IMAP and POP are both ways to read your Gmail messages in other email clients. IMAP can be used across multiple devices. Emails are synced in real time. POP can only be used for a single computer.

How do I identify my POP server? ›

Find your Exchange mailbox server settings

In Outlook Web App, on the toolbar, select Settings. > Mail > POP and IMAP. The POP3, IMAP4, and SMTP server name and other settings you may need to enter are listed on the POP and IMAP settings page.

Is POP email still used? ›

POP3 is a protocol that has been around for a very long time. POP1 was first created in1984 and POP2 in early 1985/. POP3 is the current version created in1988 and remains one of the most popular email protocols.

Why would you use POP instead of IMAP? ›

POP works well for single, dedicated devices with spotty internet connection because, while IMAP "syncs" data between multiple devices, POP does not. The majority of emails using POP are stored on the user's machine. Only incoming emails are stored on the server.

Why use IMAP instead of POP? ›

IMAP only downloads a message when you click on it, and attachments aren't automatically downloaded. This way you're able to check your messages a lot more quickly than POP.

What is SMTP used for? ›

SMTP is used to send and receive email. It is sometimes paired with IMAP or POP3 (for example, by a user-level application), which handles the retrieval of messages, while SMTP primarily sends messages to a server for forwarding.

Can SMTP receive email? ›

The Simple Mail Transfer Protocol (SMTP) is an application used by mail servers to send, receive, and relay outgoing email between senders and receivers. As the technology behind email communication, SMTP is the protocol that allows you to send and receive emails.

Does Gmail use SMTP? ›

For non-Gmail clients, Gmail supports the standard IMAP, POP, and SMTP protocols. The Gmail IMAP, POP, and SMTP servers have been extended to support authorization via the industry-standard OAuth 2.0 protocol.

Do we still use SMTP? ›

SMTP is a fundamental protocol used in email communication. Most likely, it's behind the emails we send and receive each day. Though it's a simple protocol, it still involves multiple components and a lot of details.

How do I find my SMTP server for my email? ›

In Outlook, click File. Then navigate to Account Settings > Account Settings. On the Email tab, double-click on the account you want to connect to HubSpot. Below Server Information, you can find your incoming mail server (IMAP) and outgoing mail server (SMTP) names.

How do I find my POP and SMTP settings? ›

Go to Settings and then Passwords & accounts. Tap the mail account you want to change the settings for. Update the Host Name for Incoming Mail Server. Tap SMTP to update the settings for the Outgoing Mail Server.

What emails have SMTP? ›

It is also the only dedicated protocol for sending emails. Most email clients—including Outlook, Apple Mail, Gmail, and Yahoo Mail—rely on SMTP to “push” or send messages from a sender to a recipient.

Is Iphone mail POP or IMAP? ›

iCloud Mail uses the IMAP and SMTP standards supported by most modern email client apps. iCloud Mail does not support POP. If you set up an account using iCloud System Preferences or macOS Mail in 10.7.4 or later, you won't see these settings because they're automatically configured.

Can you have POP and IMAP enabled at the same time? ›

Turn on POP, IMAP, or both—You can turn on POP and IMAP or turn them on independently of each other. Restrict which IMAP clients people can use—You can choose to allow all IMAP clients or specify only allowed clients.

How do I find POP and IMAP settings in Outlook? ›

Enable POP access in Outlook.com
  1. Select Settings. > View all Outlook settings > Mail > Sync email.
  2. Under POP and IMAP, select Yes under Let devices and apps use POP.
  3. Select Save.

Is POP3 being phased out? ›

This is nothing new; Microsoft has been announcing this for a long time already. However, now, there is also a definitive deadline: January 1st, 2023. What is POP3? POP3, often called Post Office Protocol, is a protocol for retrieving emails from a mail server.

Is IMAP obsolete? ›

Apparently, Microsoft is no longer going to support IMAP basic authentication. When working with my clients ISP, we were able to get IMAP enabled again...and the setup worked. We were informed that in January 2023 it would no longer be available and couldn't be enable again.

Why not to use IMAP? ›

One of the biggest security issues with IMAP is that it transmits logins from the client to the server in plain text by default, meaning usernames and passwords are not encrypted. (An encrypted login is obscured using complex mathematical equations so an attacker would not be able to understand it just by reading it.)

What is an example of an IMAP server? ›

The incoming mail server for an IMAP account may also be called the IMAP server. For example, if your e-mail provider is example.com, the incoming mail server is likely imap.example.com.

What type of email account do I have POP3 or IMAP? ›

Double click on the email account which you would like to check (if you only have one, then only one will be listed) Then, check the port numbers listed: 995 and 110 are POP3 ports. All other port numbers are IMAP. If there is no port number listed and you can see the Server URL then it is an Exchange account.

Does IMAP delete email from server? ›

IMAP stands for Internet Message Access Protocol. This second method, like POP, is used for email retrieval purposes, and starts by accessing email from a remote server. Instead of then storing locally and deleting from the server, the email just simply stays on the server.

Should I disable POP? ›

Typically you will want to turn OFF the pop-up blocker if it is causing issues with accessing a website. If you do not want to completely disable the pop-up blocker, you can also explore the instructions to find out how to turn off the pop-up blocker just for the specific website(s) you are trying to access.

What is the SMTP port for Gmail? ›

The fully qualified domain name of the SMTP service is smtp.gmail.com. Configuration options include: Port 25, 465, or 587.

What do I put for outgoing mail server? ›

Ideally, your Outgoing Mail Server should be set to the same as your Incoming Mail Server, which means you will send and receive email through your web hosting account. In the same place that you specified the Outgoing Mail Server, you may find a way to set the port number of the Outgoing Mail Server / SMTP Server.

What is SMTP in Gmail? ›

In simple terms, SMTP (Simple Mail Transfer Protocol) is an email protocol used by mail servers for outgoing emails over the Internet. Email protocols, on the other hand, are specific rules that organize the email exchange between email clients and accounts.

Can Gmail be a POP account? ›

Gmail, Google's internet-based email service, runs on the Internet Message Access Protocol (IMAP) system. It also offers Post Office Protocol (POP) mail server access. Both IMAP and POP mail servers both handle email messages, but in slightly different ways. It's up to the user to determine which suits them best.

Can I switch from POP to IMAP without losing emails? ›

Yes, POP and IMAP are just different types to configure the account in your server. You could use the export and import way in outlook and the messages will not get lost.

Does POP3 delete email from server? ›

By default, when you retrieve new messages from a POP3 email account, the messages are deleted from the POP3 mail server and then saved on the computer that you are using.

What happens if I change from POP to IMAP? ›

Switching a POP3 account to IMAP allows you to keep messages on the server, and to synchronize them to multiple IMAP clients. You just need to create a new IMAP account in your mail client, then drag any messages from your old POP3 account into the IMAP account if you'd like to retain them and remove the POP3 account.

Who uses POP and IMAP? ›

POP and IMAP are both protocols used for retrieving email from an email server so you can read messages on your device. They're used when connecting to your email account from a desktop email app, like Thunderbird, Outlook, Apple Mail, Spark, or similar.

What is a real life example of SMTP? ›

If you use a web browser to use GMail, you do use HTTP. You could have an e-mail application as a client to GMail, and it could use SMTP to send, receive, and synchronize with GMail. A lot of people do this so that they automatically have local copies of their e-mail.

Why not use SMTP? ›

Disadvantages of the integrated SMTP-server

Firstly, the difficulty of sending messages. Suppliers restrict the sending of large numbers of emails to prevent spam attacks. The second is insecurity. Using the built-in SMTP server, you need to take care of the impossibility of authorizing third parties in your account.

How secure is SMTP email? ›

end-to-end email encryption. While SMTPS is more secure and private than using no encryption or authentication, it only encrypts emails as they move from sender to mail server and between mail servers.

How do I find out what my SMTP server is? ›

Most email servers use the Simple Mail Transfer Protocol, or SMTP. These servers allow you to send emails. You can find your SMTP server address by selecting Tools > Options > Outgoing Server on your email account's settings page.

Is POP or IMAP better? ›

IMAP is better if you are going to be accessing your email from multiple devices, such as a work computer and a smart phone. POP3 works better if you are only using one device, but have a very large number of emails. It is also better if you have a poor internet connection and need to access your emails offline.

How do I setup a POP SMTP email in Outlook? ›

If you want to use POP to access your email in Outlook.com, you'll first need to enable POP access.
  1. Select Settings. > View all Outlook settings > Mail > Sync email.
  2. Under POP and IMAP, select Yes under Let devices and apps use POP.
  3. Select Save.

What is a POP server for Outlook mail? ›

POP (Post Office Protocol) is a simple email service which allows your email client (i.e. Outlook, Thunderbird, Mac Mail) to connect to the mail server and download your emails directly to your computer or mobile device. The downloaded emails are then removed from the server.

Is Gmail A SMTP server? ›

The default Gmail SMTP server name is smtp.gmail.com and if you use it, you can configure any external email application to send out messages. The email platform connects to the SMTP server over particular email ports. An SMTP port is an endpoint used to transmit emails across the internet.

How do I set up SMTP server for email? ›

How to Install and Configure SMTP Server on Windows
  1. Step 1: Add Roles and Features in Server Manager Dashboard.
  2. Step 2: Select Installation Type.
  3. Step 3: Select Destination Server.
  4. Step 4: Select Server Role.
  5. Step 5: Select Features.
  6. Step 6: Install Missing Features.
  7. Step 7: Confirm Installation.
Mar 1, 2023

What is an example of a SMTP server? ›

An SMTP email server will have an address (or addresses) that can be set by the mail client or application that you are using and is generally formatted as smtp.serveraddress.com. For example, Gmail's SMTP server host address is smtp.gmail.com, and Twilio SendGrid's is smtp.sendgrid.com.

Is Gmail a POP or IMAP? ›

Gmail provides IMAP access to your Gmail account, so you can connect to your email from mobile devices and desktop email clients.

Do I need both POP and IMAP? ›

While POP3 can work well for single devices, IMAP is the better option in case you ever need to use a new device. If you are using POP3 and lose access to your main device, you would also lose access to all your past emails. That's why we recommend using IMAP in this instance, instead of POP3.

When would I use SMTP? ›

SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving email. SMTP is used most commonly by email clients, including Gmail, Outlook, Apple Mail and Yahoo Mail. SMTP can send and receive email, but email clients typically use a program with SMTP for sending email.

What is the outgoing port for POP email? ›

Port 110 is the default POP3 port and it is not encrypted. The encrypted port for POP3 is 995 and works over TLS/SSL.

What is email server pop before SMTP? ›

POP before SMTP Authenticates on the POP3 server (receiving mail server) before sending the email. When you select this item, set the POP3 server. Lets you enter a user name or email address for the mail server. Used with the POP before SMTP and SMTP AUTH methods.

What is the SMTP for Outlook? ›

The Outlook SMTP server allows you to configure your favorite email client or your website to send emails using your Outlook account. For WordPress users, the benefit here is that it improves the reliability of your site's emails because you get to use Outlook's optimized SMTP servers.

Should I choose POP or IMAP for Outlook? ›

IMAP and POP are two methods to access email. IMAP is the recommended method when you need to check your emails from several different devices, such as a phone, laptop, and tablet.

What are the disadvantages of POP protocol? ›

Disadvantages of POP3
  • Emails cannot be accessed from other machines (unless configured to do so).
  • Exporting the local mail folder to another email client or physical machine can be difficult.
  • Email folders can become corrupted, potentially losing the entire mailbox at once.

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