When drafting email messages in Microsoft Outlook—whether using Outlook on the web, Outlook for Windows, or the modern Outlook client—pasting a website URL into the composer automatically triggers a background web crawler. Outlook fetches the target webpage’s Open Graph metadata and generates an interactive visual link preview containing an image thumbnail, title, and descriptive text block directly beneath your link.
While rich link previews provide a visual summary for casual messages, they can quickly disrupt structured formatting, increase message payload size, and trigger privacy concerns by pinging remote web servers before an email is even transmitted. Furthermore, in corporate environments with strict email formatting guidelines, large preview boxes clutter clean text threads. This guide explains how to disable automatic link previews in Microsoft Outlook on both desktop and web interfaces.
Why Disable Automatic Link Previews in Outlook?
Disabling automatic link generation offers several clear operational and security advantages:
| Factor | With Link Previews Enabled | With Link Previews Disabled |
|---|---|---|
| Privacy & Security | Microsoft servers automatically fetch target URLs to generate thumbnails, alerting web hosts of link existence | Zero external network calls made until a user explicitly clicks the hyperlink |
| Visual Formatting | Inserts large card boxes beneath every pasted link, breaking paragraph flow and spacing | Clean inline text hyperlinks (or standard anchor text) without bulky boxes |
| Email Payload Size | Embeds additional HTML table elements, metadata tags, and inline styles into the message body | Minimal plain HTML payload, ensuring fast delivery and rendering |
| Drafting Speed | Slight delay while the composer contacts web endpoints and renders card assets | Instant text pasting without interface lag or layout shifts |
How to Turn Off Link Previews in Outlook on the Web and Modern Outlook for Windows
The modern Outlook desktop app (the unified client built on web technologies) shares identical configuration pathways with Outlook on the web (OWA / Outlook.com). Changing this setting synchronises across your Microsoft 365 cloud profile:
- Open Microsoft Outlook in your desktop app or visit
outlook.office.com/outlook.live.comin your browser. - Click the Settings gear icon located in the upper-right corner of the top navigation bar.
- In the left-hand menu of the Settings window, select Mail.
- In the secondary column, select Compose and reply.
- Scroll down through the compose options until you reach the Link preview section.
- Untick the checkbox labelled Preview links in email.
- Click the Save button at the bottom of the Settings window.
From this moment onwards, whenever you paste a web address into a new email, reply, or forward, Outlook retains it as a clean hyperlink without attempting to fetch card previews.
Managing Link Previews in Classic Outlook for Windows
If your organisation continues to deploy the classic Win32 desktop build of Outlook (part of Microsoft Office Professional Plus or Microsoft 365 Apps for enterprise):
- Open the classic Outlook desktop client.
- Click the File tab in the top-left corner.
- Select Options from the left sidebar to open the Outlook Options dialogue box.
- Click Mail in the navigation pane.
- Scroll down to the Compose messages section and click Editor Options….
- In the Editor Options window, select Advanced.
- Under the Cut, copy, and paste options, locate link and formatting behaviours, or navigate to Trust Center > Trust Center Settings > Automatic Download to restrict remote web asset downloads.
- Click OK to commit your choices.
Removing an Individual Link Preview Manually While Drafting
If you prefer leaving link previews enabled for general use but wish to remove an unwanted preview box from a specific email draft, you can remove it in one click without altering system settings:
- Paste the URL into your draft email message.
- Wait a brief moment for the preview card to generate below your text.
- Look at the top-right corner of the generated preview card.
- Click the small X (Remove preview) button.
The preview box collapses immediately, leaving your original text URL intact without altering subsequent messages.
Disabling automatic link previews ensures your Microsoft Outlook correspondence remains compact, professionally formatted, and free from unwanted remote metadata requests.