How to disable outlook sharecalender accept mail.

Hi @ Mohamed Raheesh 

Welcome to our forum!

To better assist you to solve the problem, could you please describe more about the issue?

1. Does the issue occur on the Outlook desktop client? Do you use the New Outlook or Classic Outlook?
2. How do you have a shared mailbox, assigned as a delegate by someone or added as a member of a shared mailbox by your admin?

If you are assigned as a delegate in the Classic Outlook, it is suggested that please contact your manager to remove (File>Account Settings>Delegate Access>Remove) you as a delegate and share the calendar with Folder permission ‘Can edit’ to you:

• As a manager: Right-click the calendar>Properties>Permissions>Add delegate’s account>Permission, choose 'Can edit'>Apply, OK.
• As a delegate: File>Open & Export > Other User's Folder>In the Folder type list, click the calendar folder.

If you are assigned as a delegate in the New Outlook, you may refer to the article and contact your manager to change the permission.

If you are added as a member of a shared mailbox by your admin, please kindly understand that there is no direct way to disable the outlook shared calendar receive mail notification, i am afraid that you need to contact your admin to remove you from the shard mailbox in the Exchange Admin Center (EAC).

Hope it helps!

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our [documentation] to enable e-mail notifications if you want to receive the related email notification for this thread.