How to Attach a Read Receipt in Outlook (And What to Expect)

Read receipts in Outlook seem simple on the surface — you send an email, the recipient opens it, and you get a notification confirming they did. In practice, there are several layers to how this works, and the outcome depends on factors you don't fully control. Here's what's actually happening when you request one, and how to set it up correctly.

What a Read Receipt Actually Does

A read receipt is a notification request attached to an outgoing email. When the recipient opens the message, their email client may send an automated reply back to you confirming the email was opened — along with a timestamp.

The key word is may. Unlike delivery receipts (which confirm the message reached the mail server), read receipts depend entirely on the recipient's email client and their personal settings. Outlook, Gmail, Apple Mail, and other clients can all handle — or ignore — these requests differently.

There are two related but distinct receipt types in Outlook:

• Delivery receipt — Confirms the email was delivered to the recipient's mailbox
• Read receipt — Confirms the email was opened by the recipient

Neither is a guarantee. Both are requests.

How to Request a Read Receipt in Outlook (Desktop)

For a Single Email

1. Open a New Email in Outlook
2. Go to the Options tab in the message ribbon
3. In the Tracking group, check Request a Read Receipt
4. You can also check Request a Delivery Receipt at the same time if needed
5. Compose and send your email as normal

That's it. The request is embedded in the email headers — no attachment, no visible indicator to the recipient beyond a dialog box that may appear when they open it.

For All Outgoing Emails (Global Setting)

If you want read receipts on every email by default:

1. Go to File → Options → Mail
2. Scroll to the Tracking section
3. Check Read receipt confirming the recipient viewed the message
4. Click OK

This applies to all future outgoing messages until you change the setting again. You can still override it on individual emails using the Options tab.

How to Request a Read Receipt in Outlook on the Web (OWA)

Outlook on the Web has a slightly different path:

1. Compose a new message
2. Click the three-dot menu (More options) at the top of the compose window
3. Select Show message options
4. Toggle on Request a read receipt and/or Request a delivery receipt
5. Click OK and send

📧 The layout may vary slightly depending on your organization's Microsoft 365 version, but the option is typically found within message settings or the "More options" panel.

How to Request a Read Receipt in Outlook for Mac

1. Open a New Message
2. In the message toolbar, go to Options
3. Click Request Receipts
4. Choose Return Receipt (delivery) or Notify When Read (read receipt)

The Mac version of Outlook has historically had slightly fewer tracking options than the Windows version, and behavior can vary depending on whether you're using a Microsoft 365 subscription version or a standalone license.

Why Read Receipts Don't Always Work 📬

This is where most users run into frustration. Read receipts are not reliable by design — and for good reason.

When a recipient's Outlook is set to prompt before sending a receipt, they'll see a dialog box asking whether to send the notification. Many users click "No" — or simply don't notice the prompt.

What the Recipient Sees

When you send an email with a read receipt request and the recipient opens it in a compatible client, they'll typically see a small dialog or banner asking:

"The sender has requested a read receipt. Do you want to send a receipt?"

They have the option to say yes or no. If they say no — or if their settings suppress the prompt entirely — you receive nothing. You won't know whether the receipt was declined or simply hasn't come in yet.

Variables That Determine Your Experience

How useful read receipts actually are in practice depends on several things specific to your situation:

• Your email environment — Exchange/Microsoft 365 organizations have more consistent behavior than mixed environments
• Who you're emailing — Internal recipients on the same mail server behave differently than external contacts
• Your Outlook version — Microsoft 365 (subscription) vs. Outlook 2016/2019 standalone versions have different feature sets and update cadences
• Recipient behavior and settings — Entirely outside your control
• Your use case — Internal team tracking, client communication, and personal email all come with different expectations around receipts

For users in tightly managed corporate Microsoft 365 environments communicating internally, read receipts work reasonably well. For anyone emailing outside their organization — or to recipients on non-Microsoft platforms — reliability drops significantly.

Some teams turn to purpose-built tools like email tracking software (integrated into Outlook via add-ins) for more consistent open tracking, since those work through a different mechanism than the native receipt system. Whether that approach fits depends on your workflow, privacy considerations, and what your organization allows.

The native Outlook read receipt feature is straightforward to enable — but how far it gets you in practice is a different question, and that answer lives in your specific setup and who you're communicating with.