Thanks for your helpThe script has to request Messenger permissions from the OAuth system in Facebook. If the user grants it then yes, you can send chat messages on his behalf.
Facebook does review each application of this sort though, for obvious reasons.
Thanks for your help
do u think is it worth to spend time and money to create it, or it will blocked by facebook?
They're gonna review it case by case. What would you tell them the purpose of this script is? If you say "spamming inboxes" you obviously won't get permission.
of course the app for spamming people what else what can one do with an app to publish on behalf of user
thnx a lot, I will give a trySnoop on what they're talking about and pop up relevant ads