Actually, you can easily save meeting changes without sending updates by the Save feature in Outlook.

1. Double click to open the meeting, and make any changes as you need.

2. Click the Save button  and the Close button  successively on the Quick Access Toolbar. See screenshot:

Now the changes in the meeting are saved, but not sent to any meeting attendees.

Note: This method works well when you change the meeting note only. If you need to change the meeting header information, such as meeting time, location, etc., this method can’t work.

Quickly search and delete duplicate emails in Outlook

With Kutools for Outlook’s Duplicate Emails feature, you can quickly find and delete them from multiple mail folders, or find and delete all duplicates from the selected ones with two clicks in Outlook.

The third method will guide you to change the specified meeting when working offline so that the meeting updates can’t be sent out at all.

1. Click to highlight the Work Offline button on the Send / Receive tab to disconnect internet.

In the offline mode, you will see   at the status bar. See screenshot:

2. Double click the meeting, make any changes as you need, and click the Send Update button.

3. Shift to the Mail view, open the Outbox folder, and then delete the meeting update mail. See screenshot:

4. Click the Work Offline button on the Send / Receive tab again to turn on online mode.

Now the meeting changes are saved, but the meeting update mail is not sent out.

Send meeting update to one (new) attendee only in Outlook