Messenger webhook for PSID finding This is a simple webhook you can use to find your user PSID.
After proper setup it will echo all messages along with sender's PSID.
Configuration When project is remixed, you should properly set 2 environment variables.
PAGE_ACCESS_TOKEN paste token assigned to your page
VERIFY_TOKEN can be anything you like, 123456789 will work, just remember to put the same value on Facebook side.