They have to confirm their subscription to the said group text by replying or sending me PM with their updated cell number. The reply will serve as a confirmation to allow receiving broadcast SMS.
No confirmation.... No group text.
Br,
silver_corolla
P.S.
After receiving my notification, any one of us (from the above list) is now IN to send a group message via "me" to Makati peeps. You might want to save the sender address coz that's my cell number. hehe.... Thanks.