How to Check Your Spam Folder in Outlook

Missing an important email? There's a good chance it landed in your Junk Email folder — Outlook's version of the spam folder. Whether you're using Outlook on the web, the desktop app, or a mobile device, the location and behavior of this folder varies enough that it's worth knowing exactly where to look and how it works.

What Outlook Calls Its Spam Folder

Outlook doesn't label it "Spam." It's called Junk Email, and it functions the same way — automatically filtering messages that Microsoft's algorithms flag as potentially unwanted. Every Outlook account has one, and it's tied directly to your mailbox, not just your device.

Understanding this distinction matters because the Junk Email folder lives on the server (for Microsoft 365, Outlook.com, and Exchange accounts). That means whatever you do to it in one place — clear it, move something out of it, mark something as not junk — reflects everywhere your account is signed in.

How to Find the Junk Email Folder

On Outlook.com (Web Browser)

1. Sign in at outlook.com
2. Look at the left-hand folder panel
3. Scroll down past Inbox, Sent, Drafts, and Deleted Items
4. Click Junk Email

If your folder list is collapsed, click the arrow or "More" option to expand it. The Junk Email folder should appear in your primary folder list without needing to dig into subfolders.

On the Outlook Desktop App (Windows)

1. Open Outlook
2. In the left navigation pane, find your account name
3. Expand the folder tree beneath it
4. Click Junk Email

If you have multiple accounts connected to Outlook, each account has its own Junk Email folder. Make sure you're looking under the correct account — this is a common source of confusion when someone has a work and personal account in the same client.

On the Outlook Desktop App (Mac)

The process is nearly identical to Windows:

1. Open Outlook for Mac
2. In the sidebar, expand the folder list under your account
3. Select Junk Email

The Mac version sometimes displays it slightly differently depending on whether you're using the new Outlook for Mac or the legacy version — but the folder name and location remain consistent.

On Mobile (iOS and Android)

1. Open the Outlook app
2. Tap the hamburger menu (three horizontal lines) in the top-left corner
3. Scroll through your folder list
4. Tap Junk Email

On mobile, the folder list may not show all folders by default. If you don't see Junk Email immediately, look for an option like "All Folders" or a folder icon that expands the full list.

Why Emails End Up in Junk

Outlook uses a combination of Microsoft's cloud-based filtering, your account's own rules, and signals like sender reputation and email content to decide what gets flagged. Emails can land in Junk for a variety of reasons:

• The sender's domain has a poor reputation
• The email contains formatting or language patterns common in spam
• You (or someone else on the account) previously marked similar emails as junk
• The sender isn't in your contacts or safe senders list
• The email failed SPF, DKIM, or DMARC authentication — technical checks that verify a sender is who they claim to be 🔍

None of these triggers are perfect. Legitimate emails from newsletters, new contacts, or automated systems (like shipping notifications or calendar invites) can easily trip these filters.

What to Do When You Find a Legitimate Email in Junk

Don't just move it. Right-click the email (or long-press on mobile) and select "Not Junk" or "Mark as Not Junk." This does two things: it moves the email to your inbox and signals to Outlook that future messages from that sender should be treated differently.

You can also add the sender to your Safe Senders list directly:

• In Outlook.com: Go to Settings → Mail → Junk email → Safe senders and domains
• In the desktop app: Go to Home → Junk → Junk Email Options → Safe Senders tab

This is particularly useful for domains you receive regular mail from — internal company senders, known newsletters, or services you've subscribed to.

How Junk Email Folder Clearing Works

Outlook automatically deletes the contents of your Junk Email folder after a set period — typically 10 days by default for Outlook.com accounts. This means if an important email was filtered to Junk and you didn't check it in time, it may already be gone.

Desktop app users connected to Exchange or Microsoft 365 may have different retention policies set by their organization. Personal Outlook.com accounts follow Microsoft's default settings unless you've adjusted them.

Variables That Affect Your Experience

How spam filtering behaves — and how easy it is to manage — depends on several factors:

The Junk Email Options panel (desktop app) gives you direct control over filter sensitivity. Outlook.com handles this mostly automatically, with fewer manual controls exposed to the user. Mobile offers the least configurability of the three.

Checking Regularly Makes a Difference 📬

How often you should check your Junk Email folder depends on your situation. Someone using Outlook for a work account with tight organizational filters may rarely see false positives. Someone who subscribes to newsletters, uses their email for signups, or communicates with new contacts frequently may find the Junk folder filling with legitimate messages more often.

The folder retention window, your account type, and how your filter sensitivity is configured are the key variables that determine whether a quick weekly check is enough — or whether something more frequent makes sense given how you use email.