I would like to greet user when he started conversation with my page. Something like: 'Hi Marian, How can I help?'.
It could be done with Send-to-Messenger Plugin as this plugin is sending authentication request to server. User id can be extracted and facebook api queried for firstName. It's just working fine.
The problem is user is clicks Message button directly on Facebook page. Then he clicks "Get Started" in message popup. Then default welcome message is sent to him, but no authentication is sent to server, so I cannot sent personalized greeting as with Send-to-Messanger plugin.
Anybody any workarounds? Thanks.
Currently, there's no pass through parameter sent with the Message Us plugin like there is with the Send to Messenger plugin. For people who enter through Message Us, you'll have to authenticate/account link through some other means like giving them a URL to a mobile login page.