How to Whitelist an Email in Outlook (Every Version, 2026)
Whitelisting a sender in Outlook adds them to your Safe Senders list so their email always lands in your inbox and never gets diverted to Junk. It’s the fix when newsletters, invoices, or messages from a known contact keep disappearing into the spam folder. You can whitelist a single address, an entire domain, or rescue a message that’s already been wrongly filtered. This guide covers each method across every version.
This guide covers every current version: Outlook on the web, the new Outlook for Windows and Mac, and classic Outlook for Windows.
1. Add a Safe Sender on the Web and New Outlook
This is the main allowlist setting and applies to your whole mailbox, including the web and mobile.
Outlook on the web / New Outlook (Windows & Mac):
- Click the Settings gear icon (top right)
- Go to Mail → Junk email
- Under Safe senders and domains, click Add
- Type the email address (e.g.,
accounts@vendor.com) or a domain (e.g.,@vendor.com) - Press Enter to add it to the list
- Click Save
Mail from anything on this list bypasses the Junk folder.
2. Add a Safe Sender in Classic Outlook for Windows
Classic Outlook keeps its own Junk Email Options dialog.
- Go to the Home tab
- Click Junk → Junk Email Options
- Open the Safe Senders tab
- Click Add
- Enter the email address or domain (e.g.,
@vendor.com) - Click OK, then OK again
- Optionally check Also trust email from my Contacts and Automatically add people I email to the Safe Senders List
These settings sync with your mailbox if you’re on a Microsoft 365 or Exchange account.
3. Whitelist Directly from a Message
The fastest route — let Outlook fill in the address for you.
Outlook on the web / New Outlook:
- Open or select the message from the sender you trust
- Click the More actions menu (…)
- Choose Add to Safe senders (or Mark as not junk if it’s in the Junk folder)
Classic Outlook for Windows:
- Right-click the message in your inbox
- Choose Junk → Never Block Sender (adds the address) or Never Block Sender’s Domain (adds the whole domain)
- To also exempt a mailing list, use Never Block this Group or Mailing List
4. Whitelist a Whole Domain
If you want every sender from an organization trusted — not just one address — whitelist the domain.
- Web / New Outlook: in Settings → Mail → Junk email → Safe senders and domains, add
@example.com(with the leading @) instead of a full address. - Classic Outlook: in Junk Email Options → Safe Senders → Add, enter
@example.com. - From a message (classic): right-click → Junk → Never Block Sender’s Domain.
Domain whitelisting is powerful but broad — it trusts anyone using that domain, so only do it for organizations you fully trust.
5. Rescue a Message Already in Junk
If a wanted email already landed in Junk, recover it and whitelist the sender in one move.
Outlook on the web / New Outlook:
- Open the Junk Email folder
- Select the message
- Click Not junk (or More actions … → Mark as not junk)
- Confirm to move it to the Inbox and add the sender to safe senders
Classic Outlook for Windows:
- Open the Junk Email folder
- Right-click the message → Junk → Not Junk
- In the dialog, check Always trust email from [sender] and click OK
For a deeper fix when mail keeps getting filtered, see how to stop emails going to junk in Outlook.
6. Adjust the Junk Filter Strength
If legitimate mail keeps getting junked even after whitelisting, the filter may be too aggressive.
Outlook on the web / New Outlook: Microsoft 365 manages much of the filtering server-side; the main controls are the Safe senders and Blocked senders lists under Settings → Mail → Junk email.
Classic Outlook for Windows:
- Home → Junk → Junk Email Options → Options tab
- Choose a level: No Automatic Filtering, Low, High, or Safe Lists Only
- Safe Lists Only is the strictest — only mail from your safe senders/domains reaches the inbox
- Click OK
The opposite of whitelisting is blocking — see how to block emails in Outlook if you also need to keep specific senders out.
Quick Reference
| Goal | Web / New Outlook | Classic Outlook |
|---|---|---|
| Whitelist one address | Settings → Mail → Junk email → Safe senders → Add | Junk → Junk Email Options → Safe Senders → Add |
| Whitelist a domain | Add @example.com | Add @example.com |
| Whitelist from a message | More actions → Add to Safe senders | Right-click → Junk → Never Block Sender |
| Rescue from Junk | Not junk | Right-click → Junk → Not Junk |
| Trust all contacts | (auto) | Check “Also trust email from my Contacts” |
Troubleshooting
I added a sender to Safe Senders but their mail still goes to Junk.
Server-side filtering on Microsoft 365 can override the client list, and a sender can be on both your safe and blocked lists. Check Settings → Mail → Junk email and remove the address from Blocked senders, and make sure you added the exact sending address (check the message header, not just the display name).
I whitelisted the domain but only some of their emails arrive.
The organization may send from a different sub-domain (e.g., mail.example.com vs example.com) or a third-party service. Whitelist each sending domain you see in the message headers, or add the specific service address.
There’s no Junk Email Options dialog in new Outlook.
New Outlook and the web version replaced the classic dialog with Settings → Mail → Junk email. Manage your safe and blocked lists there; the Junk Email Options dialog only exists in classic Outlook.
My Safe Senders list doesn’t sync to my phone or the web.
For POP/IMAP accounts the list is local to classic Outlook. For Microsoft 365/Exchange accounts it should sync — if it doesn’t, re-add the sender via Outlook on the web so the change is made server-side.
A safe sender’s mail still has links and images blocked.
Whitelisting controls junk routing, not content blocking. To auto-download images from a trusted sender, in classic Outlook go to File → Options → Trust Center → Automatic Download, or right-click the blocked image and add the sender to the safe list there too.
If you’d rather not babysit your Junk folder for messages that should never have been filtered, Carly is an AI assistant that manages your inbox, handles scheduling, and connects to 200+ apps — making sure the email that matters reaches you and the noise doesn’t.
More on Outlook: How to stop emails going to junk in Outlook · How to block emails in Outlook · How to report phishing in Outlook · How to create rules in Outlook · How to filter emails in Outlook · How to unsubscribe from emails in Outlook
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