To turn off the meeting forward notifications in Outlook, please do as follows:

1. Select any email or folder of your Exchange account in Outlook, click File > Info, and then click the hyperlink besides the Account Settings button to open your Outlook Web App. See screenshot:

2. Now the login page of your Outlook Web App is opening, please enter your username and password to login.

3. In the Outlook Web App, please click the Settings > Options at the upper-right corner. See screenshot:

4. Go ahead to (1) click settings in the left bar, (2) click calendar at the top of right section, (3) check the Delete notifications about forwarded meetings option, and (4) click the Save button. See screenshot:

5. Log out your Outlook Web App.

For now on, you will not receive the meeting forward notifications in your Outlook any longer.

Automatically forward every email to the specified recipient in Outlook

Generally speaking, we can set a rule to automatically forward emails to the specified recipients, such as your another email account, your Gmail, or your colleagues, etc. But, all we know it will take a long time to configure a custom rule in Outlook. Now, we introduce Kutools for Outlook's (Automatic) Forward feature, which can set a auto forwarding rule with several clicks only.

Forward meeting as email without notifying meeting organizer in Outlook

Disable calendar notification in Outlook

Change reminder notification sound in Outlook