What read receipts do and how to turn them on
A read receipt in Outlook is a notification that tells you when someone has opened an email you sent them. When you enable read receipts on a message, Outlook sends you a separate email back once the recipient opens it — not when they receive it, but when they actually open it in their inbox or preview pane.
To request a read receipt on a single email in Outlook on the web, open a new message, click the three dots (more options), find "Request a read receipt," and toggle it on before you send. In Outlook desktop, click the "Options" tab while composing, then check "Request a Read Receipt" in the Tracking group. The recipient will see a notification asking whether to send you a receipt — they can decline.
If you want read receipts on every email you send, you can set that as your default. In Outlook desktop, go to File > Options > Mail > Tracking, then check "Always request a read receipt." On the web, this option is not available as a blanket setting, so you have to turn it on per message.
Key Takeaways
- Read receipts notify you when someone opens an email, not when they receive it, and the recipient can choose to decline sending one back.
- In Outlook desktop, use the Options tab while composing a message, or set it as your default in File > Options > Mail > Tracking.
- In Outlook on the web, click the three dots in a new message and toggle "Request a read receipt" before sending.
- Read receipts do not work reliably across all email providers — recipients using Gmail or other services may not see the request at all.
Why recipients can refuse to send a read receipt
When you request a read receipt, the recipient's Outlook client shows them a prompt asking whether to send one back. They can click "Yes" or "No" — there is no way to force them to send it. Many people decline because they do not want to confirm they have read something, or because they are not sure what the request means.
Some organizations disable read receipts entirely through group policy or email settings, so employees cannot send them even if they want to. This is common in workplaces where privacy is a concern or where read receipts have caused confusion in the past.
What read receipts do not tell you
A read receipt means someone opened the email, but it does not mean they read it, understood it, or will act on it. Someone might open your message, see the first line, and close it without reading further. Or they might open it by accident while scrolling through their inbox.
Read receipts also do not work across all email systems. If you send to a Gmail address, a Yahoo address, or many corporate email systems, the recipient will not see a read receipt request at all — Outlook simply cannot communicate that request to those providers. You will never know whether they opened it.
How to check read receipts you have received
When someone sends you a read receipt, it arrives as a separate email in your inbox with the subject line "Read: [original subject]." You can search for these by typing "is:read" in the Outlook search box, or look through your inbox for messages with that prefix.
In Outlook desktop, you can also track messages you have sent by going to the Sent folder, right-clicking a message, and selecting "Show Message Details" or "Message Status." This shows you whether a read receipt has been received, though only if the recipient sent one back.
When read receipts are actually useful
Read receipts work best when you are sending to other Outlook users within the same organization — usually a corporate email system. If everyone uses the same email platform and read receipts are enabled, you get reliable confirmation that someone opened your message.
They are less useful for external emails, time-sensitive messages, or anything where you need to know whether someone actually understood what you sent. If you need confirmation that someone received and read something important, a follow-up phone call or a reply asking them to confirm is more reliable than a read receipt.
Turning off read receipts you have requested
If you sent a message with a read receipt request and want to cancel it, you cannot — the message is already in the recipient's inbox. You can only delete the message from your Sent folder on your end, which does not affect what the recipient sees.
If you want to stop requesting read receipts going forward, turn off the setting in File > Options > Mail > Tracking (desktop) or stop toggling it on in each message (web). There is no way to retroactively remove a read receipt request from a message that has already been sent.
Read receipts and privacy concerns
Some people view read receipts as intrusive because they reveal when you have opened an email, even if you have not replied. If you receive a lot of read receipt requests, you can set Outlook to automatically decline them without prompting you. In Outlook desktop, go to File > Options > Mail > Tracking and choose "Never send a read receipt."
Be aware that declining read receipts might signal to the sender that you are avoiding confirmation, even though you may simply prefer privacy. There is no middle ground in Outlook — you either send receipts or you do not.
Frequently Asked Questions
Does a read receipt mean the person read my entire email?
No. A read receipt only confirms that someone opened the email. They might have opened it, seen the subject line, and closed it without reading the body. If you need to know whether they understood the content, ask them to reply or confirm in person.
Why did I request a read receipt but never got one back?
The most common reasons are: the recipient declined the prompt, they use an email provider that does not support read receipts (like Gmail), or their organization has disabled read receipts. You have no way to know which one happened.
Can I see read receipts for emails I sent weeks ago?
Only if the recipient sent a read receipt back at the time. Read receipts arrive as separate emails, so if you deleted them or they went to spam, you cannot retrieve them. You cannot request a read receipt retroactively on an old message.
What is the difference between a read receipt and a delivery receipt?
A delivery receipt confirms the email reached the mail server. A read receipt confirms someone opened it. Outlook can send both, but they are separate notifications. Delivery receipts are more reliable because they do not depend on the recipient's choice.
Do read receipts work if someone uses Outlook on their phone?
Yes, if they have read receipts enabled in their Outlook mobile app settings. However, some mobile email clients do not support read receipts at all, so you may not get one even if they opened the email on their phone.