How to add an email account to Outlook (Gmail, IMAP, and more)

What does adding an email account to Outlook actually do?

Adding an email account to Outlook means connecting an existing mailbox, the one that lives on Google's servers, Microsoft's, Apple's, Yahoo's, or your company's, so that its messages flow into Outlook and you can read, reply, and send from inside one app. You are not creating a new email address and you are not moving your mail anywhere. You are giving Outlook permission to talk to a server you already own, sync the folders down, and act as a window onto that mailbox. When you add a second or third account, Outlook stacks them in the same left-hand pane so you can work across all of them without switching apps or browser tabs.

This is the single most common first task anyone faces with Outlook, and it is also where people get stuck most often, because there is no longer one Outlook. In 2026 there are, in practice, three: new Outlook for Windows (the rebuilt app Microsoft has been rolling out to replace the old one, with a toggle in the top corner that reads "New Outlook"), classic Outlook for Windows (the long-running desktop program that ships with Microsoft 365 and Office), and Outlook on the web (the browser version at outlook.office.com or outlook.com). New Outlook and the web share almost the same menus because they are built on the same foundation. Classic Outlook is the outlier, with its older File-based menus and its own way of adding accounts. The Outlook mobile apps for iOS and Android are a fourth path again. Knowing which one you are looking at decides everything that follows.

This guide covers all of them, end to end. We start with the modern path, adding an account in new Outlook and on the web, because that is what most people now see. Then we cover classic Outlook through the File menu. We walk through the popular providers, Gmail, Yahoo, and iCloud, and explain exactly when you need an app password versus a browser sign-in. We give you the full manual IMAP setup with a server-settings table you can copy, for any account Outlook does not recognize automatically. We show how to add several accounts and pick which one is the default. We cover removing an account cleanly, adding mail on your phone, and what to do when an account simply will not connect. At the end, we look at why juggling several Outlook accounts is harder than it should be, and how a unified inbox like AI Emaily pulls every provider into one place. By the time you finish, you will know the right steps for your exact version.

How do you add an email account in new Outlook or on the web?

New Outlook for Windows and Outlook on the web use the same place to add an account, because they share an engine, so this one set of steps covers both. Everything happens in Settings, under Accounts. If this is the very first time you have opened the app and you have no account yet, new Outlook greets you with a welcome screen that asks for an email address straight away; in that case, type your address there, select Continue, and skip ahead, because you are already on the add-account path. If you already have one account and want to add another, you go through Settings instead. Here is the full procedure.

1. 1

   Open Settings from the gear icon

   In new Outlook or on the web, select the gear (Settings) icon in the top-right corner of the window. The Settings panel opens. If you prefer, you can also reach the same screen from the menu rather than the gear, but the gear is the fastest route in both apps.

2. 2

   Go to Accounts, then Email accounts

   In the Settings panel, choose Accounts, then select Email accounts. This page lists every mailbox already connected to this copy of Outlook and is the home for adding, managing, and removing accounts.

3. 3

   Select Add account

   Select Add account (in some builds this appears as a + button next to the list). A small dialog opens with a single field asking for the email address of the account you want to add.

4. 4

   Type the email address and continue

   Enter the full address of the mailbox you are adding, for example you@gmail.com or you@yourcompany.com, then select Continue. Outlook looks the address up and decides how it should connect, whether through a provider sign-in window or by asking you for server details.

5. 5

   Sign in or approve the connection

   For most modern providers (Microsoft, Google, Yahoo, iCloud), Outlook hands you to that provider's own sign-in page. Enter your password there, approve any two-step prompt on your phone, and grant Outlook access when asked. For everything else, Outlook asks for your password or sends you to manual setup.

6. 6

   Wait for the mailbox to appear

   Once the connection is confirmed, close the dialog. The new account shows up in the left-hand folder pane below any accounts you already had, with its own Inbox, Sent, and folders. Give it a minute to finish the first sync, then it is ready to use.

That is genuinely the whole flow for the common cases, and it is why the new app is easier for most people than classic Outlook ever was: you type an address, Outlook figures out the provider, and the provider handles the password securely in its own window. Because new Outlook and the web are the same underneath, an account you add in one tends to be reflected when you sign in to the other with the same Microsoft account, so you rarely have to repeat the work.

It helps to understand what new Outlook is doing behind that single address field, because it explains why the experience can differ from one account to the next. When you type your address and select Continue, Outlook performs a lookup, often called autodiscover, to find out who hosts that mailbox and which method it should use to connect. For a Microsoft, Google, Yahoo, or Apple address it recognizes the domain instantly and routes you to the right sign-in page. For a custom domain (you@yourcompany.com), it tries to discover the server settings from records published by your mail host, and only falls back to asking you for details if it cannot find them. So the reason some accounts add in two clicks and others ask for more is not random; it reflects how much the provider has published for clients to discover automatically.

There is one wrinkle worth flagging. New Outlook supports a wide range of providers, but some niche or older account types are added more reliably in classic Outlook, and a few corporate setups behave differently depending on how the organization is configured. If new Outlook will not take your account even though you are sure the address and password are right, it is not a dead end. Skip down to the classic Outlook section and to the manual IMAP section, where you get full control over the server settings, which is exactly what stubborn accounts need.

How do you add an account in classic Outlook through the File menu?

Classic Outlook for Windows, the desktop program that comes with Microsoft 365 and Office, adds accounts from the File menu rather than from a gear icon. The flow looks older, but it gives you something the modern app sometimes hides: an Advanced options link that lets you set the account up by hand. That manual route is the one to remember, because it is how you connect any mailbox classic Outlook does not recognize automatically. Here is the standard path.

1. 1

   Open File, then Add Account

   In classic Outlook, select File in the top-left corner to open the Account Information screen. Select Add Account. A simple window appears asking for an email address.

2. 2

   Type your address and reveal Advanced options

   Enter the email address you want to add. Before selecting Connect, look for the small Advanced options link and expand it. This is where the manual setup choice lives, and it is easy to miss.

3. 3

   Choose to set up manually when you need to

   If you want Outlook to try the connection automatically, just select Connect. If you already know the account needs specific server settings (a small business host, a webmail provider Outlook does not auto-detect, or Gmail set up by hand), tick "Let me set up my account manually," then select Connect.

4. 4

   Pick the account type

   On manual setup, Outlook asks which type of account this is, the usual choices being Microsoft 365 (Exchange), Outlook.com, Google, Exchange, POP, or IMAP. For most non-Microsoft mailboxes you want IMAP, which keeps your mail on the server and in sync across devices. Choose the type that matches your provider.

5. 5

   Enter the password or server details

   For a recognized provider, enter your password (or complete the provider sign-in window) and Outlook fills in the servers for you. For a manual IMAP account, Outlook shows fields for the incoming and outgoing servers, which you fill in from the table further down in this guide.

6. 6

   Finish and let it sync

   Select Connect or Done to finish. Classic Outlook tests the connection, and on success the new mailbox appears in your folder list. The first sync of a large mailbox can take a while, so leave it running until your Inbox fills in.

One detail that trips up classic Outlook users: the order in which you add accounts matters. The first account you add to a profile becomes the primary, or default, account, and Outlook treats it specially, you cannot simply remove a primary account from a profile while other Exchange-type accounts remain. So if you have a strong preference for which mailbox is your main one, add it first when setting up a fresh profile. We cover changing the default below, but it is cleaner to get the order right at the start than to wrestle with it later.

If you are coming from new Outlook and finding it limited, classic Outlook's manual IMAP option is the escape hatch. Anything with a standard IMAP and SMTP server, which is almost every email service on earth, can be added here by typing the server names, ports, and encryption type by hand. That makes classic Outlook the reliable fallback for small-business mailboxes, legacy hosts, and any provider the modern app shrugs at.

How do you add a Gmail, Yahoo, or iCloud account to Outlook?

The big consumer providers, Gmail, Yahoo, and iCloud, all guard your account with two-step verification by default, and that changes how you connect them to Outlook. There are two ways in. The modern, preferred way is OAuth: Outlook sends you to the provider's own sign-in page in a browser window, you log in there, approve the two-step prompt on your phone, and grant Outlook access, your real password never gets stored in Outlook at all. The older fallback is an app password: a one-time code you generate in the provider's security settings and paste into Outlook in place of your normal password. Which one you need depends on the provider and on how you are adding the account.

For Gmail, the smooth path is OAuth. When you add a Gmail address in new Outlook or in classic Outlook with automatic setup, Outlook opens a Google sign-in window. You enter your Google password, approve the prompt on your phone if two-step is on, and choose Allow when Google asks to let Outlook access your account. That is it, no app password required. Gmail's IMAP access has been switched on by default for all accounts since early 2025, so you no longer have to dig into Gmail settings to enable it first. If you instead set Gmail up manually with IMAP (the server route below), and your account has two-step verification turned on, then you do need an app password, because manual IMAP cannot do the browser approval. You generate one under your Google Account, in Security, under App passwords, and paste it into Outlook as the password.

For Yahoo, an app password is effectively mandatory for desktop Outlook. Yahoo no longer lets a mail app connect with your normal Yahoo password. Go to your Yahoo Account Security page, generate an app password (Yahoo lets you label it, for example "Outlook Desktop"), and use that code as the password when you add the account. New Outlook may offer a Yahoo sign-in window that handles this for you, but if you are doing manual IMAP, reach for the app password. For iCloud, Apple requires an app-specific password whenever you add your iCloud Mail to a third-party client like Outlook. You create one at appleid.apple.com, under Sign-In and Security, in the App-Specific Passwords section, then paste it into Outlook. Your iCloud account must have two-factor authentication enabled to generate one, which nearly all do.

It is worth being precise about why these three providers behave this way, because the same logic applies to most consumer mail in 2026. Google, Yahoo, and Apple all phased out the ability for third-party apps to connect using your everyday account password, a practice that used to be called "less secure app access." The reason is straightforward security: a plain password typed into a desktop app is a password that can be stolen wholesale, and it grants that app the run of your entire account. OAuth solves this by never handing the app your password at all; instead, the provider issues Outlook a scoped, revocable token after you approve the login in the provider's own trusted window. App passwords are the middle ground for apps that cannot do the browser dance, a single random credential, tied to one app, that you can revoke without changing anything else. Understanding that hierarchy makes the right choice obvious: prefer the sign-in window, use an app password only when you have to.

A practical tip across all three: if Outlook offers you a sign-in window with the provider's own logo (Google, Yahoo, Apple), take it, that is OAuth, and it is both easier and more secure than fiddling with app passwords. Only fall back to generating an app password when Outlook insists on a plain password field and the connection keeps failing, which usually means you are on the manual IMAP path. The most common Gmail complaint, being asked to re-authenticate every time Outlook restarts, is almost always a sign the OAuth token did not stick; removing and re-adding the account through the proper Google sign-in window usually settles it.

Whichever provider you are connecting, the destination in Outlook is the same as the general flow above: new Outlook through Settings, Accounts, Email accounts, Add account; classic Outlook through File, Add Account. The only thing that changes per provider is how you prove who you are, a browser approval, an app password, or both. Get that part right and the mailbox syncs in like any other.

How do you set up an account manually with IMAP server settings?

When Outlook does not recognize your provider, or you are connecting a small-business mailbox or a host that needs specific settings, you set the account up manually with IMAP. IMAP keeps your mail on the server and mirrors it in Outlook, so your folders, read status, and messages stay in sync across every device, which is what you almost always want. (POP, the older alternative, downloads mail and can remove it from the server; avoid it unless you have a specific reason.) Manual setup means typing four things: the incoming (IMAP) server and port, the outgoing (SMTP) server and port, the encryption method, and your username and password.

The path is the manual one we covered: in new Outlook, Add account often detects the provider, but if it drops you into an advanced or IMAP form, fill it from the table below; in classic Outlook, File, Add Account, expand Advanced options, tick "Let me set up my account manually," choose IMAP, and you get the server fields. Below are the current settings for the providers people most often add by hand. Always use your full email address as the username, and for SSL ports use the encrypted option (SSL/TLS) rather than the unencrypted one.

A few notes on the table. For Gmail, Yahoo, and AOL, port 465 uses SSL and port 587 uses TLS (STARTTLS); either works with the right encryption set, so if one fails, try the other. Gmail and Yahoo manual setups need an app password as covered above, not your normal password, when two-step verification is on. iCloud always needs an app-specific password and uses port 587 for outgoing mail. Outlook.com is included for completeness, but you should let Outlook add a Microsoft account automatically rather than by hand, since the automatic flow handles modern authentication for you. If your provider is not listed, the server names and ports are published on its help site, usually under a heading like "IMAP settings" or "set up mail on another device," and they slot into the same fields.

If a manual IMAP account connects but behaves oddly, mail arrives but will not send, or sending throws an authentication error, the cause is almost always the outgoing server. Re-check the SMTP server name and port, confirm SMTP authentication is switched on, and make sure you are using the app password (not your login password) where the provider requires one. Getting incoming mail working is the easy half; the outgoing side is where manual setups usually need a second look.

How do you add multiple accounts and set a default in Outlook?

Outlook is built to hold many mailboxes at once, and adding more than one is simply repeating the add-account flow for each address. In new Outlook or on the web, go back to the gear icon, then Accounts, then Email accounts, then Add account, and connect the next mailbox; in classic Outlook, return to File and Add Account. Each account stacks in the left-hand folder pane as its own collapsible section with its own Inbox and folders, so you can scroll a single window and answer mail from your work address, your personal Gmail, and a side-project account without ever leaving the app. There is no hard practical limit for ordinary use; people routinely run four or five accounts side by side.

Once you have several accounts, one of them is the default, the address Outlook uses to send a brand-new email unless you change it, and the one some features fall back to. By default this is the first account you added. To change which mailbox is the default in new Outlook, the term Microsoft uses is the "primary" account. Here is how to set it in each app.

1. 1

   New Outlook: open Accounts in Settings

   Select the gear (Settings) icon, choose Accounts, then Email accounts. You see the list of every connected mailbox, with the current primary account marked.

2. 2

   New Outlook: Manage the account you want as primary

   Find the mailbox you want to make the default and select Manage to the right of it. The account-details page opens for that mailbox.

3. 3

   New Outlook: set it as primary

   Under Account details, select "Set as primary account." Outlook may need a restart to apply the change fully. From then on, new messages default to that address.

4. 4

   Classic Outlook: open Account Settings

   Select File, then Account Settings, then Account Settings again. On the Email tab you see all your accounts listed.

5. 5

   Classic Outlook: Set as Default

   Select the account you want as the default, then select "Set as Default" on the toolbar above the list, then Close. New emails now go out from that account unless you pick another in the From field.

Whatever the default, you can always override it per message. When you compose a new email, look for the From field above the To line, click it, and choose which of your connected addresses to send from. If you do not see a From field in classic Outlook, turn it on from the Options tab of the compose window by selecting "From." This is the everyday way to send the right message from the right identity without changing your global default, useful when most of your mail goes from one account but the occasional reply needs to come from another.

There is a subtle but important habit to build once you run multiple accounts: always glance at the From field before you hit Send. The single most common mistake people make with a multi-account setup is replying to a personal thread from their work address, or pitching a client from a personal Gmail, simply because the default account was the one that filled in automatically. Outlook does try to be smart about it, when you reply to a message, it usually sends from whichever account received it, so a reply to mail that landed in your Gmail goes back out from Gmail. But brand-new messages always start from the default, and that is where the slips happen. Making a two-second check of the From line part of your routine saves the awkward follow-up that begins with "sorry, wrong account."

One caution on the primary account, especially in classic Outlook. Because the first account added is treated as primary, and because a primary account cannot be removed while other Exchange-type accounts remain in the same profile, changing your main identity later can be fiddly. Setting a new default for sending is straightforward, as above; but fully replacing the underlying primary account sometimes means creating a fresh Outlook profile with the account you want added first. For most people, simply setting the default for outgoing mail is all they ever need, and the deeper profile surgery is rare.

How do you remove an email account from Outlook?

Removing an account from Outlook disconnects that mailbox from the app; it does not delete the account itself or any mail on the server. Your messages stay safe with your provider, and you can re-add the account later. After removal, you simply will not be able to send or receive that account's mail inside Outlook until you reconnect it. This is the clean way to clear out an old work address, a mailbox you no longer use, or an account that is misbehaving and needs a fresh re-add. The steps differ by app.

1. 1

   New Outlook or web: open Email accounts

   Select the gear (Settings) icon, choose Accounts, then Email accounts. Find the mailbox you want to remove in the list.

2. 2

   New Outlook or web: Manage, then Remove

   Select Manage next to that account, then on its details page select Remove (it may read "Remove account" or "Delete"). Confirm when prompted. The mailbox disappears from your folder pane.

3. 3

   Classic Outlook: open Account Settings

   Select File, then Account Settings, then Account Settings again. On the Email tab, select the account you want to delete.

4. 4

   Classic Outlook: Remove and confirm

   Select Remove above the list, then confirm in the warning dialog. Classic Outlook removes the account and its cached local data from this profile; the server copy is untouched.

How do you add an email account to the Outlook mobile app?

The Outlook app for iPhone and Android adds accounts in its own way, separate from the desktop, though the idea is the same: type an address, sign in, done. If you have just installed the app and have no account yet, it opens onto a Get Started screen, tap that, enter your email address, and tap Continue, then sign in to your provider. If you already have one account and want to add another, you go through the app's Settings instead. Here is the flow for adding a second (or first) account on mobile.

1. 1

   Open the app and reach the account menu

   Open the Outlook mobile app. On first run, tap Get Started and skip to entering your address. If you already have an account, tap your account avatar or the menu icon in the top corner, then tap the Settings (gear) icon.

2. 2

   Tap Add Account, then Add Email Account

   In Settings, tap Add Account, then Add Email Account. A field appears asking for the email address you want to connect.

3. 3

   Enter your email address and continue

   Type the full address and tap Continue (or the checkmark). Outlook detects the provider and decides how to sign you in, usually by opening that provider's sign-in page.

4. 4

   Sign in and approve

   Enter your password on the provider's page. If two-step verification is on, approve the prompt, and answer Yes to any "Let this app access your info?" question. For a provider Outlook cannot auto-detect, it asks you to choose IMAP or POP and enter the server settings from the table above.

5. 5

   Let the mailbox sync

   Once connected, the new account appears in the app. Tap your avatar to switch between accounts, or use the unified view to see them together. The first sync may take a moment over mobile data, so connecting on Wi-Fi is smoother.

A couple of mobile notes. Gmail, Yahoo, and iCloud on the Outlook mobile app generally use the OAuth browser sign-in, so you rarely need to type an app password on a phone, you just approve the login. If you are adding a corporate Exchange or Microsoft 365 account, your organization may apply security policies (a screen lock requirement, for example) before it lets the account onto your device; that is normal and managed by your IT team. And if you are setting up the built-in iOS Mail app rather than the Outlook app, the path is different: that lives under your phone's Settings, not inside Outlook, but for an Outlook.com or Microsoft account, the Outlook app is the smoother choice.

Worth knowing for older accounts: Microsoft has been retiring legacy mobile sync protocols, and devices using very old Exchange ActiveSync versions can lose the ability to connect. If a phone that used to receive mail suddenly cannot, updating the Outlook app to the latest version usually restores the connection, because the current app uses modern authentication that the old protocol versions did not.

Why won't my account connect, and how do I fix authentication errors?

When an account refuses to connect in Outlook, the cause is almost always one of a small handful of things, and working through them in order fixes the large majority of cases. The error messages vary, "Something went wrong," "We couldn't sign you in," "The connection to the server failed," or an endless password prompt, but the underlying fix is usually the same few checks. Start at the top of this list and stop when it connects.

• Wrong password, or you need an app password. Confirm you can sign in to the mailbox in a normal browser first. If the provider uses two-step verification and you are on a manual IMAP setup (Yahoo, manual Gmail, iCloud), you need an app password or app-specific password, not your login password. Generate one in the provider's security settings and paste it in.
• OAuth that did not stick. If Outlook keeps asking you to sign in every time it restarts (a classic Gmail symptom), the authorization token did not save. Remove the account and re-add it through the provider's own sign-in window, choosing Allow when asked to grant access, so the token is stored properly.
• Outgoing mail fails but incoming works. This is an SMTP problem. Open the account's More Settings, go to the Outgoing Server tab, and switch on "My outgoing server (SMTP) requires authentication." Re-check the SMTP server name and port against the table above, and try the alternate port (465 versus 587).
• Two-step prompt not approved. Some sign-ins wait for you to tap Approve on your phone or answer Yes to an access question. If you dismissed it, the connection silently fails. Re-run the add-account flow and watch your phone for the prompt.
• Wrong server, port, or encryption. On manual setups, a single typo in the server name, the wrong port, or SSL set to off will block the connection. Compare every field carefully with the provider's published IMAP and SMTP settings.
• The provider needs IMAP enabled, or a security toggle changed. Most providers now enable IMAP by default, but a few business or older hosts require you to switch IMAP on in webmail settings before any client can connect.
• Try the other Outlook, or remove and re-add. A genuinely stubborn account that new Outlook rejects will often add cleanly in classic Outlook through manual IMAP, where you control every setting. When in doubt, remove the account and add it again from scratch, fresh credentials and a clean token clear up a lot.

How does AI Emaily unify every account in one inbox?

Adding accounts to Outlook works, but it exposes a deeper truth: most of us live across providers, a work mailbox on Microsoft 365, a personal Gmail, an iCloud address on the family plan, maybe a Fastmail or Proton account for privacy, and the side project on a custom IMAP host, and stitching all of that into one app is fiddly. You wrestle with app passwords, OAuth prompts, and the question of which account is primary, and even when it all connects, you are still inside a tool that treats each mailbox as a separate stack of folders you have to triage by hand. The connecting is the easy part; the living-in-it is the work.

AI Emaily starts from the opposite end. It is an AI-native email client built around a genuinely unified inbox that connects every provider at once, Gmail, Outlook and Microsoft 365, iCloud, Yahoo, Fastmail, Proton, and any standard IMAP account, and presents them as a single, coherent stream rather than a row of separate mailboxes you click between. You add your accounts once, and from then on you read and reply across all of them in one place, with one search that spans every provider and one set of rules that applies everywhere. There is no "which account am I in" friction, because the inbox is the unit, not the account.

The bigger shift is that AI Emaily does not just hold your mail, it acts on it. It reads incoming messages, drafts replies in your voice, sorts and prioritizes what matters, and surfaces the handful of emails that actually need you, across every connected account at once. You choose how much it does: Manual keeps you fully in control, Copilot proposes actions and drafts for you to approve before anything is sent, and Autopilot handles defined routines on its own, always with an undo and a full audit trail so nothing happens behind your back. That is a different relationship with email than connecting accounts to a traditional client and triaging them yourself, and it is the same regardless of whether a given message arrived at your Gmail, your Outlook, or your iCloud address.

If you only have a single mailbox and never plan to add another, Outlook on its own is perfectly capable, and this guide has shown you every way to connect that account. The case for a unified, AI-native inbox grows with each account you add, because that is exactly where a traditional client starts to feel like manual labor: more passwords to manage, more places to look, more triage to repeat. Pulling everything into one stream, and letting an assistant do the first pass, is what turns several busy mailboxes back into something you can actually stay on top of.

Getting started is deliberately low-commitment. The Free plan costs nothing and lets you connect up to two accounts, which is enough to feel the difference between a unified inbox and a stack of separate ones. If you run more than two mailboxes, Pro is $17.99 per month billed annually and lifts the limit so you can bring every provider you own into one place. You can sign up and connect your first accounts at app.aiemaily.com/signup, and keep Outlook running alongside it while you decide.

Putting it all together

Adding an email account to Outlook comes down to knowing which Outlook you have and matching the steps to it. In new Outlook and on the web, you open the gear, go to Accounts, then Email accounts, then Add account, type your address, and sign in, the modern, OAuth-friendly path that handles Gmail, Yahoo, iCloud, and Microsoft accounts through a secure provider window. In classic Outlook, you go to File and Add Account, and reach for the Advanced options when you need to set things up by hand. On mobile, you tap through Settings to Add Account, or use the first-run screen, and approve the sign-in on your phone.

The details that catch people out are predictable: app passwords for Yahoo, iCloud, and manual Gmail when two-step verification is on; SMTP authentication for any account you set up by hand; the IMAP and SMTP server settings in the table above for providers Outlook does not auto-detect; and the fact that the first account you add becomes the primary, which matters when you later set a default or remove an account. Work through the right section for your situation and the connection goes through.

And once you are running more than one or two mailboxes, it is worth questioning the model itself. Connecting several accounts to a traditional client gives you several inboxes in one window; a unified, AI-native client like AI Emaily gives you one inbox across every provider, and an assistant that reads, sorts, and drafts so the volume stays manageable. Whichever you choose, you now know exactly how to get every account where you need it, on every version of Outlook.