Outlook Read Receipts: How They Work
Outlook read receipts are optional for the recipient, who can decline to send one. How to request them, where they fail, and a better way to track a PDF.
Quick answer: in Outlook you can request a read receipt, but the recipient can decline to send it. Microsoft says "there is no way to force a recipient to send a read receipt." For a PDF, a tracked link tells you more.
What Microsoft says
From Microsoft's support article on read receipts (checked November 2026):
- In Outlook, the message recipient can decline to send read receipts.
- Receipts are not sent when the recipient's email program does not support them.
- The feature is not available for IMAP or POP accounts such as Gmail, Yahoo! or iCloud.
- You can't request a read receipt in Outlook.com on the web, but you can for Outlook.com messages sent from Outlook for Windows.
A delivery receipt confirms a message reached the recipient's mailbox. A read receipt confirms the message was opened. Neither shows that an attachment was read.
How to request a read receipt in Outlook for Windows
- Create a new message.
- Open the Options tab.
- Check Request a Read Receipt.
- Add the PDF and send.
To request them for every message, go to File, Options, Mail, and under Tracking choose Read receipt confirming the recipient viewed the message. Menu names can vary a little between versions.
Why receipts often do not arrive
| Cause | Result |
|---|---|
| Recipient clicks No on the prompt | No receipt |
| Recipient's mail app ignores requests | No receipt |
| Recipient reads in a preview pane or on mobile | Often no receipt |
| Recipient uses an IMAP or POP account | Not supported per Microsoft |
Track the PDF instead
If you care whether the PDF was opened, send a link.
- Upload at the PDF to link tool.
- Paste the link into your Outlook email.
- Watch the dashboard.
SharePDF emails you the first time someone other than you reads an unlisted PDF, on every plan. Bots and link previews are not counted. Paid plans show time on each page, countries, devices and completion. See track a PDF.
This does not prove who read it. If you need names, turn on the email gate, so the reader enters an email first. Many readers will not bother, so use it only when the content is worth the extra step.
More: how to tell if someone opened your PDF, Gmail read receipts, and how to send a PDF by email.
Worked example
Tom emails a contract from Outlook for Windows to a supplier.
- He turns on Request a Read Receipt and sends the contract as an attachment.
- The supplier's mail program asks whether to send a receipt. They click No. Tom gets nothing, and Microsoft's page says he cannot force it.
- A week later Tom switches to a link. He uploads the contract, pastes the link, and sees the first view the same afternoon.
He knows the contract was opened. He does not know who opened it, only that someone did. If he sent it to one person, that is a fair guess.
Troubleshooting
| Problem | Likely cause | What to do |
|---|---|---|
| Option missing in Outlook.com | Not available there; Microsoft says you can't request one in Outlook.com | Use Outlook for Windows, or a tracked link |
| Working with a Gmail account in Outlook | Microsoft says not available for IMAP or POP accounts such as Gmail, Yahoo! or iCloud | Use a tracked link |
| Recipient never gets a prompt | Their mail program does not support receipts | Follow up, or use a tracked link |
| Receipt shows delivered only | You asked for a delivery receipt | A delivery receipt confirms delivery to the mailbox, not that it was read |
| Receipt says read but no reaction | The message may have been opened in a preview | Ask for a reply |
Delivery receipt or read receipt
Microsoft separates the two. A delivery receipt confirms the message reached the recipient's mailbox. A read receipt confirms it was opened. Neither covers an attachment.
How to be fair to your reader
If you are sending something important, you can tell the reader you will follow up by a given date. That sets expectations without needing a receipt. For a first-open alert on the PDF itself, SharePDF sends one email per PDF, on all plans, and you can turn it off in Settings under PDF defaults.
Next: Gmail read receipts, how to send a PDF and send a PDF by email.
FAQ
Can I force a read receipt in Outlook?
No. Microsoft says there is no way to force a recipient to send one.
Does Outlook tell me if the PDF attachment was opened?
No. Read receipts concern the message.
Do read receipts work with Gmail recipients?
Only if their mail program supports and honors the request. Microsoft notes the feature is not available for IMAP or POP accounts such as Gmail on your side.
Is a tracked link visible to the recipient?
It looks like a normal web link. Be open about tracking where it matters.
Can I turn on read receipts for every email in Outlook?
Yes in Outlook for Windows, through the Tracking options. The recipient can still decline.
Why did I get a receipt from one person but not another?
Different mail programs and settings. Some ask, some ignore the request, and some are not supported.