To schedule an email send in Outlook, the steps vary slightly depending on the version you are using:

For Classic Outlook (desktop Windows):

1. Create a new email and compose your message.
2. Go to the Options tab in the email window.
3. Click on Delay Delivery.
4. In the dialog box, check Do not deliver before and set the desired date and time for sending.
5. Click Close and then Send the email.
6. The email will stay in your Outbox and be sent at the scheduled time.
   • Note: Outlook must be open at the scheduled time for the email to send.

For the New Outlook (Windows/macOS):

1. Compose a new email.
2. Next to the Send button, click the downward arrow (⌄).
3. Select Schedule send.
4. Choose a suggested time or pick a custom date and time.
5. Click Send.
6. The message will be saved in your Drafts folder and sent automatically at the scheduled time.
   • Outlook does not need to be open for sending at the scheduled time in the new Outlook.

For Outlook on the Web or Outlook.com:

1. Draft your email.
2. Click the downward arrow next to Send and choose Schedule send.
3. Pick a default or custom time.
4. Click Send , and the email will stay in Drafts until the scheduled send time.

To Edit or Send Scheduled Email Immediately:

• Open the scheduled email from Outbox (classic) or Drafts (new or web).
• Modify the send time or select Send now to send immediately.

This covers how to schedule emails in Outlook on various platforms and versions with user-friendly interfaces to pick the sending time after drafting the email.