Email sent to the entire team when scheduling a Teams meeting

Hi @IBN ，

Generally, meeting invitation mails are sent to users added in the participants field(either "Required" or "Optional"):

So please make sure only the individual users are added in the participants when creating the meeting.

Or do you mean there are some existing Teams meetings sent the team, then after the guest user was added into the team, you would like to include the guest user into some of the existent meetings without affecting the other team members? If this is the case, based on my test, you can open the original meeting request in Outlook, add the guest user's email address into the participants field, click Send Update, choose "Send updates only to added or deleted attendees":

If neither of the above is what you are encountering, could you clarify where and how you "book a meeting" so that we can help you better?

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Set the meeting schedule in the team calendar but don't invite the Teams team. Just invite individual users and guests.