How to Delay or Schedule an Email in Outlook

Outlook offers multiple ways to control when your emails are sent. You can delay a single message, schedule it for a specific date and time, or create a rule that delays all outgoing mail by a set number of minutes. This guide covers every method across Outlook Desktop (Classic), New Outlook for Windows, and Outlook on the Web.

Why Delay or Schedule Emails

Delaying email delivery serves several practical purposes:

• Prevent premature sends. A short delay (1-5 minutes) gives you a window to catch errors, add forgotten attachments, or reconsider tone before the message actually leaves your outbox.
• Respect time zones. Scheduling messages for business hours in the recipient's time zone increases the likelihood of a timely response.
• Batch communication. Draft responses throughout the day and schedule them for a single send window to reduce inbox interruptions for your recipients.
• Campaign timing. Marketing and transactional emails often perform better when sent at specific times. Scheduling ensures consistency.

Method 1: Delay a Single Email (Outlook Desktop - Classic)

This method delays one specific message using the Delay Delivery feature:

1. Compose your message as usual.
2. Click the Options tab in the ribbon.
3. Click Delay Delivery (or More Options dialog launcher, then Delay Delivery).
4. Under Delivery options, check "Do not deliver before".
5. Set the desired date and time.
6. Click Close.
7. Click Send.

The message moves to your Outbox folder and remains there until the specified time. Important: Outlook must be open and connected for the message to send at the scheduled time. If Outlook is closed, the message will send the next time you open the application.

Method 2: Delay All Outgoing Emails (Outlook Desktop - Classic)

This is the "undo send" equivalent for Outlook. By creating a rule that delays all outgoing messages, you gain a buffer to cancel any email before it leaves:

1. Go to File > Manage Rules & Alerts.
2. Click New Rule.
3. Under "Start from a blank rule," select "Apply rule on messages I send". Click Next.
4. Click Next again without selecting any conditions (this applies the rule to all sent messages). Confirm by clicking Yes when prompted.
5. In the actions list, check "defer delivery by a number of minutes".
6. Click the underlined "a number of" link and set your preferred delay (1-5 minutes is common). Click OK.
7. Click Next, then Next again (skip exceptions unless you want some messages to send immediately).
8. Name the rule (e.g., "Delay all outgoing mail 2 minutes").
9. Check "Turn on this rule" and click Finish.

All outgoing messages will now sit in the Outbox for the specified number of minutes before sending. To cancel a message during the delay period, open the Outbox, open the message, and either delete it or move it to Drafts.

Adding Exceptions to the Delay Rule

You may want certain messages to bypass the delay -- for example, messages marked as high importance. When creating or editing the rule:

1. On the exceptions step, check "except if it is marked as importance".
2. Click the underlined "importance" link and select High.

Messages flagged as high importance will send immediately while all others observe the delay.

Method 3: Schedule Send in Outlook on the Web

Outlook on the Web (outlook.com, outlook.office.com, Microsoft 365) has a built-in Schedule Send feature that does not require rules:

1. Compose your message.
2. Click the dropdown arrow next to the Send button.
3. Select Schedule send.
4. Choose one of the suggested times or click Custom time to set a specific date and time.
5. Click Send.

The message appears in your Drafts folder with a scheduled send indicator. To cancel or modify the scheduled send, open the message from Drafts and click Cancel send.

Unlike the Desktop rule-based delay, Schedule Send on the Web works server-side. The message will send at the scheduled time even if you close your browser or shut down your computer.

Method 4: Schedule Send in New Outlook for Windows

New Outlook for Windows mirrors the web interface:

1. Compose your message.
2. Click the dropdown arrow next to the Send button.
3. Select Schedule send.
4. Choose a suggested time or set a custom date and time.
5. Click Send.

The same server-side scheduling applies -- the message will send regardless of whether the application is open.

Method 5: Outlook Mobile (iOS and Android)

Outlook Mobile supports scheduled sending:

1. Compose your message.
2. Long-press the Send button (iOS) or tap the three dots and select Schedule send (Android).
3. Choose a suggested time or set a custom time.
4. Confirm.

Scheduled messages appear in Drafts and can be canceled before the send time.

Key Differences Between Methods

Troubleshooting Delayed Emails

Message stuck in Outbox. If a delayed message remains in the Outbox past its scheduled time, check your internet connection and ensure Outlook is in Online mode (not set to Work Offline). Also verify that the message has not grown too large for your SMTP server's size limits.

Rule not applying. Confirm the rule is enabled under File > Manage Rules & Alerts. If you have multiple rules, check their order -- rules execute sequentially, and a higher-priority rule may be interfering.

Exchange and Microsoft 365 policies. In corporate environments, Exchange transport rules may override client-side delay rules. If your organization uses Exchange, consult with your IT administrator about server-side mail flow rules that may affect delivery timing.

Scheduled send failed. If a scheduled message on the Web or New Outlook did not send, check the Drafts folder. Network interruptions at the exact send time can occasionally prevent delivery. Resend or reschedule from Drafts.

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