How Do You Undo In Outlook Email : Recall Sent Message Steps

Hitting send too quickly on an email in Outlook is easy, but reversing that action requires a specific undo command. Understanding how do you undo in outlook email can save you from embarassment, misdirected messages, or forgotten attachments. This guide walks you through every method, setting, and trick to recall or undo an email in Outlook across desktop, web, and mobile versions.

How Do You Undo In Outlook Email

The core feature for undoing an email in Outlook is called “Undo Send.” It gives you a short window—typically 5 to 30 seconds—to stop a message from being delivered. Once that time expires, the email is sent permanently. Let’s break down how to use it on different platforms.

Enable Undo Send In Outlook Desktop

First, you need to turn on the Undo Send feature if it isn’t already active. Here are the steps for Outlook 2016, 2019, and Microsoft 365 desktop versions.

Open Outlook and click File in the top-left corner.
Select Options from the menu.
In the Outlook Options window, click Mail on the left sidebar.
Scroll down to the “Send messages” section.
Check the box that says “Undo Send” or “Allow undo send.”
Use the dropdown to set the delay time: 5, 10, 15, 20, or 30 seconds.
Click OK to save.

Now, every time you send an email, a small bar appears at the top of the window with an Undo link. Click it within your set delay to recall the message. The email then opens in a new compose window so you can edit or delete it.

Using Undo Send In Outlook Web (OWA)

Outlook on the web has a similar feature, but it’s enabled by default with a 10-second delay. You can adjust this setting easily.

Log into Outlook.com or your work webmail.
Click the Settings gear icon (top right).
Select View all Outlook settings at the bottom.
Go to Mail > Compose and reply.
Under “Undo send,” move the slider to set a delay from 0 to 30 seconds.
Click Save.

After sending an email, a notification appears at the bottom of the screen saying “Message sent. Undo.” Click Undo immediately to cancel delivery. The message returns to draft mode.

Undo Send In Outlook Mobile App

The mobile app for iOS and Android also supports undo send. The process is slightly different because of the touch interface.

On iPhone Or iPad

Open the Outlook app and tap the menu icon (three lines) in the top left.
Tap the Settings gear at the bottom.
Scroll down and tap Undo send.
Choose a delay time: 5, 10, 15, or 30 seconds.
Tap Save.

After sending, a pop-up appears at the bottom: “Sending…” with an Undo button. Tap it before the timer runs out.

On Android

Open Outlook and tap your profile picture in the top left.
Tap the Settings gear.
Select Undo send under “Mail.”
Pick your preferred delay.
Tap Save.

The undo prompt works the same way—tap Undo quickly after hitting send.

What Happens When You Undo An Email

When you click Undo, Outlook stops the message from being sent to the server. The email is returned to your Drafts folder. You can then edit the subject line, body, recipients, or attachments. If you don’t want to send it at all, simply close the draft without saving.

Important: Undo Send only works if the recipient hasn’t already received the message. If their email client fetches mail instantly (like Exchange or IMAP push), the delay might not be long enough. Set a longer delay (20-30 seconds) for safety.

Alternative Methods To Recall An Email In Outlook

If the Undo Send window has passed, you have another option: Message Recall. This feature tries to delete or replace a sent email from the recipient’s inbox. However, it only works under specific conditions.

Requirements For Message Recall

Both you and the recipient must use Microsoft Exchange or Microsoft 365 in the same organization.
The recipient must not have read the email yet.
The recipient must have Outlook open and online.
Public folders or shared mailboxes are not supported.

Steps To Recall A Sent Email

Go to your Sent Items folder.
Double-click the email you want to recall (it must be in its own window).
In the Move group on the ribbon, click Actions.
Select Recall This Message.
Choose one:
- Delete unread copies of this message – removes the email.
- Delete unread copies and replace with a new message – lets you send a corrected version.
Check “Tell me if recall succeeds or fails for each recipient.”
Click OK.

You’ll get a notification later about whether the recall worked. Keep in mind that recalls often fail if the recipient uses a non-Outlook client or has already read the message.

Common Mistakes When Trying To Undo In Outlook

Many users struggle because they don’t know the feature exists or they wait too long. Here are frequent errors:

Not enabling Undo Send first – The feature is off by default in desktop versions. You must turn it on.
Setting too short a delay – 5 seconds may not be enough to realize you made a mistake. Use 10 or 15 seconds.
Closing the notification bar – In desktop Outlook, if you close the “Message sent” bar, you lose the Undo button.
Thinking Recall works like Undo – Recall is unreliable and only works within your organization.
Using Outlook without an internet connection – Undo Send requires the message to still be in the outbox. If you’re offline, the message stays there until you connect.

How To Increase The Undo Send Window

If you frequently need more time, increase the delay to the maximum 30 seconds. Here’s how on each platform:

Desktop

Go to File > Options > Mail. Under “Send messages,” set the delay to 30 seconds.

Web

Settings > View all Outlook settings > Mail > Compose and reply. Drag the slider to 30 seconds.

Mobile

Settings > Undo send > Choose 30 seconds.

Note: A longer delay means your email sits in the outbox longer. If you send many messages, this might feel slow. But for important emails, it’s worth it.

What To Do If Undo Send Is Not Working

Sometimes the feature fails. Try these fixes:

Check your Outlook version – Older versions (Outlook 2010 or earlier) don’t have Undo Send. Upgrade to Microsoft 365 or Outlook 2016+.
Restart Outlook – A simple restart can resolve glitches.
Update Outlook – Go to File > Office Account > Update Options > Update Now.
Disable add-ins – Some add-ins interfere with sending. Go to File > Options > Add-ins and disable suspicious ones.
Check your internet connection – If you’re offline, the message stays in the outbox. You can delete it manually from the Outbox folder before it sends.

How To Manually Delete An Email From The Outbox

If you catch the email before it sends (while it’s still in the Outbox folder), you can delete it directly. This works even if Undo Send is disabled.

Click the Outbox folder in the left pane.
Find the email you want to stop.
Right-click it and select Delete.
If prompted, confirm deletion.

This method is useful when you’re offline or when the send delay is too short. The email never leaves your outbox.

Using Rules To Delay Sending All Emails

For extra safety, you can create a rule that holds all outgoing messages for a few minutes. This gives you more time to undo.

Go to File > Manage Rules & Alerts.
Click New Rule.
Select Apply rule on messages I send.
Click Next (don’t add conditions).
Check defer delivery by a number of minutes.
Set the delay (e.g., 2 minutes).
Click Next and name the rule.
Click Finish.

Now all your emails sit in the Outbox for 2 minutes. You can open the Outbox and delete any message before it sends. Note: This rule applies to every email, so it may slow down your workflow.

Undo Send In Outlook For Mac

Outlook for Mac also has an Undo Send feature. It’s enabled by default with a 10-second delay.

Go to Outlook > Preferences.
Click Composing.
Under “Undo send,” set the delay time.
Close the window.

After sending, a small notification appears at the top. Click Undo to recall the message.

Third-Party Tools For Email Undo

If Outlook’s built-in options aren’t enough, consider add-ins like Send Later or Boomerang. These let you schedule emails and recall them before they go out. However, they usually require a subscription.

Another option is to use Microsoft Power Automate to create custom workflows that delay or recall emails. This is more advanced but gives full control.

Best Practices To Avoid Needing Undo

Prevention is better than recall. Follow these habits:

Add recipients last – Write the email and attach files before adding the To field.
Use the “Send Later” option – Schedule emails for a future time so you can review them.
Double-check attachments – Look for the paperclip icon before sending.
Read the email aloud – Catch typos and tone issues.
Set a default delay – Keep Undo Send at 20-30 seconds always.

Frequently Asked Questions

Can I undo an email after 30 seconds in Outlook?

No, the maximum undo window is 30 seconds. After that, you can try Message Recall, but it’s not guaranteed to work.

Does undo send work on Outlook for Mac?

Yes, Outlook for Mac has Undo Send. Enable it in Preferences > Composing and set your delay.

Why don’t I see the undo option after sending?

You may not have enabled the feature, or your delay is too short. Check your settings and increase the delay time.

Can I recall an email sent to an external recipient?

Message Recall only works within the same Exchange organization. For external recipients, you cannot recall the email.

What happens if I close the undo notification?

If you close the notification bar in desktop Outlook, you lose the chance to undo. The email sends immediately.

Final Thoughts On Undoing Emails In Outlook

Knowing how do you undo in outlook email gives you a safety net for those rushed moments. Enable Undo Send on all your devices, set a comfortable delay, and practice using it. For critical messages, combine Undo Send with manual Outbox checks. While no method is perfect, these tools significantly reduce the risk of sending a regrettable email. Test the feature with a test email to build confidence. With a little setup, you can hit send without fear.