Interval of hours or days to send proactive message in messenger [closed] - botframework

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What is the range of hours or days that I can send a proactive message to facebook messenger users through botframework?
NodeJS SDK - botbuilder version 3.14
I'm using code sample below
// send simple notification
function sendProactiveMessage(address) {
var msg = new builder.Message().address(address);
msg.text('Hello, this is a notification');
msg.textLocale('en-US');
bot.send(msg);
}
var savedAddress;
server.post('/api/messages', connector.listen());
// Do GET this endpoint to delivey a notification
server.get('/api/CustomWebApi', (req, res, next) => {
sendProactiveMessage(savedAddress);
res.send('triggered');
next();
}
);
// root dialog
bot.dialog('/', function(session, args) {
savedAddress = session.message.address;
var message = 'Hello! In a few seconds I\'ll send you a message proactively to demonstrate how bots can initiate messages.';
session.send(message);
message = 'You can also make me send a message by accessing: ';
message += 'http://localhost:' + server.address().port + '/api/CustomWebApi';
session.send(message);
setTimeout(() => {
sendProactiveMessage(savedAddress);
}, 5000);
});

Answer 1

Quoting Facebook Messenger Policy:
24-Hour Messaging Window
Businesses and developers using the Send API
have up to 24 hours to respond to a message sent by a person in
Messenger when using standard messaging. A bot may also send one
additional message after the 24-hour time limit has expired. The
24-hour limit is refreshed each time a person responds to a business
through one of the eligible actions listed in Messenger Conversation
Entry Points. This is commonly referred to as the '24 + 1 policy'.
For information on how you may be able to send messages outside the
24-hour messaging window, see the Tags documentation, and Sponsored
Messages.
This policy is available here: https://developers.facebook.com/docs/messenger-platform/policy/policy-overview#standard_messaging