How to sort Conversation by DATE of sent and received

To sort conversation messages by the date they were sent or received, use the Conversation/Reading Pane settings and choose the message order:

For Outlook on the web or Outlook.com (new Outlook experience):

1. Open Outlook on the web.
2. Select Settings (gear icon) > Mail > Layout.
3. Under Message organization, ensure Show email grouped by conversation is selected if conversation view is desired.
4. Under Arrange the reading pane, choose either:
   • Newest on top – latest sent/received messages appear at the top of the conversation, or
   • Newest on bottom – latest messages appear at the bottom.

These options control the chronological order of messages within each conversation thread.

If using Outlook mobile:

1. Tap Inbox > Settings > Mail.
2. On iOS, go to Email Organization; on Android, look under Threading.
3. Turn Group Emails by Conversation on if needed.
4. Under Arrange The Reading Pane, select Newest on Top or Newest on bottom to control message order in conversations.

References:

• View email messages by conversation in Outlook
• Mail settings
• Optimize the Outlook mobile app for your iOS or Android phone