How to Add a POP Account to Outlook (and Why to Avoid It)

To add a POP account to Outlook manually, go to File, then Add Account, then Advanced options, and check Let me set up my account manually before you connect. On the next screen choose POP, then enter your provider's incoming server address and port (commonly port 995 with SSL) and outgoing server address and port (commonly port 587 with STARTTLS).

That's the mechanical answer. The honest answer is that you should think twice before you do it. POP was built for a world with one computer and one mail client, and it still behaves that way: it downloads mail to whichever device asks for it, it doesn't track what you've read anywhere else, and it doesn't carry your folders or contacts along for the ride. If your provider offers IMAP — and almost all of them do now — that's the setup that will actually survive you owning a phone.

Should you use POP or IMAP in Outlook?#

IMAP treats the server as the source of truth: read a message on your phone, and it shows as read in Outlook a moment later, because both are looking at the same server-side state. POP treats the server as a mailbox you empty. Whichever device downloads a message first gets it; every other device either never sees it or sees a separate, disconnected copy, depending on your server settings.

The only real reason to use POP in 2026 is that your provider doesn't offer anything else — a handful of smaller ISPs and legacy business hosts still ship POP-only mailboxes. If your provider gives you a choice, take IMAP. If it doesn't, the rest of this guide gets you through POP safely, including the one setting that determines whether your mail survives being read on more than one device.

Before you start#

• Your email address and password — or an app-specific password, if your provider (Gmail, Yahoo, iCloud) requires one for non-browser apps
• The provider's POP3 server address and port, and its SMTP server address and port — these are two different values and providers vary more on the outgoing one
• Whether POP access is turned on in your provider's webmail settings — Gmail and Outlook.com both disable POP by default
• A decision on whether to keep a copy of mail on the server, made before you connect — see the dedicated section below

How to add a POP account to Outlook#

This is the manual path for classic Outlook on Windows, which is where POP setup is most complete. The account types list on the way in also has an explicit POP option, so you're not forcing anything Outlook doesn't expect.

1. 1

   Open Add Account

   In classic Outlook, select File, then Add Account.

2. 2

   Switch to manual setup

   Enter your email address, select Advanced options, check Let me set up my account manually, then select Connect.

3. 3

   Choose POP from the account type list

   On the Advanced Setup screen, select Other, then choose POP from the list — the other options here are IMAP, Exchange, and a few provider-specific entries.

4. 4

   Enter the incoming (POP3) server

   Enter the server address and port from your provider's own settings page — commonly port 995 with SSL, or port 110 without encryption on older setups.

5. 5

   Enter the outgoing (SMTP) server

   Enter the SMTP server address and port — commonly port 587 with STARTTLS, or 465 with SSL. This is the value most likely to differ from the incoming one, so don't assume it matches.

6. 6

   Authenticate

   Enter your password. If it's rejected immediately rather than just failing to download, generate an app-specific password in your provider's account security settings and use that instead.

7. 7

   Finish, then set the delivery option

   Select Connect, then Done — but before you let a lot of mail download, go back into the account's Advanced settings and decide on Leave a copy of messages on the server, covered next.

Turn on "leave a copy of messages on the server"#

This is the setting that decides whether adding Outlook as a second POP client quietly empties your provider's mailbox. Go to File, then Account Settings, then Account Settings again, double-click the POP account, select More Settings, then the Advanced tab. Check Leave a copy of messages on the server.

Don't assume it's already on. Whether a fresh POP account starts with this checked varies by Outlook version, and guessing wrong is how people discover — usually from a phone or webmail complaint — that Outlook already took every message off the server. Two related checkboxes sit right below it: Remove from server after a set number of days, and Remove from server when deleted from Deleted Items. Either gives you a cleanup path without going back to manually toggling the setting later.

If Outlook is the only place you'll ever read this mailbox, leaving the box unchecked is a reasonable, tidier default — nothing accumulates on the server. The moment a second device is involved, check it.

Platform differences#

POP setup isn't identical across Outlook's own platforms, and one gap in particular — new Outlook for Windows — trips people up during a switch they didn't fully choose.

What to do when it doesn't work#

A faster way#

Even set up correctly, POP leaves you responsible for the leave-a-copy setting on every device you add, and for remembering it again the next time you set one up. It also means the mail on your phone and the mail in Outlook are two separate downloads, not one synced view.

AI Emaily connects Outlook, Gmail, and any IMAP account into one inbox that stays consistent everywhere — no per-device toggle, no local data file to lose — and runs a triage agent on top that sorts and drafts before you open the message. It doesn't change what POP or IMAP do; it replaces the manual, per-device setup with one account that's already synced, with automation layered on it. We build AI Emaily, and it's a 7-day free trial to try it against your real inbox.