Hi Saleh,
I need to look into your account. Please reply to this post and include your Windows Live Hotmail e-mail address.
In the meantime, I suggest that you check out MSFT Roopa S’ Solution Article “You're prompted to remove recipients before you can send a message” by accessing the link below.
http://windowslivehelp.com/solutions/sendlimits/archive/2009/03/11/you-re-prompted-to-remove-recipients-before-you-can-send-a-message.aspx
I would also need you to clarify which 15 number code you are referring to. Please also be more specific about your “special email inquiries” question.