I want to develop a excel plugin SMS send or bulk SMS send.
I need help if knowhow to excel and add in
Um... so you can send a billions messages in one fell swoop?
Honestly, that sounds like the killer chainsaw guy asking me to oil and sharpen his chains... then lock the door and board up the windows.
I can't really get behind anything making that easier, even if YOU are not the evil fellow looking to plague me with a million messages that were no effort at all for you to do... because someone else will very willingly fill that role.