There are many people who ask how to send a personal message in the mailbox according to the api schedule, I have been looking for a long time, the answer is no. the reason is that "the application must be whitelisted"
An alternative solution is sent via api chat (xampp). but that is not my decision. Coz html post is not supported in api chat.
I know that Dropbox can do this, can I ask how to enable my application’s whitelist on Facebook to send a message in my inbox?
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