Difficulty sending invites using Apple Mail program

This is a recent development -- When I send invitations to a Zoom meeting via Apple's mail program, no one receives the invite.

I set up the meeting, then copy the invitation link. I start the Apple mail program, select recipients, then paste the link into the body of the mail. When I send it, literally no one receives it, although the mail program confirms that it has been sent. I'm not sure if this is a mail problem or a Zoom link issue.

Does anyone have any suggestions for resolution?