If this is on the assignment object/window then the email gets sent to whoever is filled into the group/user/role attributes. You may have an admin window which shows the contents of this in the process rather than the default window which may not show everything. Select the assignment action in your process and look in the window or if this is an optional action on a status, select that and check the contents of the action instance data property to see the contents.
Look out for someone using the role as if that is used everyone in the role gets the message. Handy if you want to notify all analysts but not otherwise!