Implement One Signal Notification.

there are 3 ways to send the notification

1.using segments like active users and inactive users.

2. using filters (your conditions)

3. using specific user ids, (which I explained)

if you don't want to send via user ids then you can also use phone numbers (specific to SMS)

myNotification.include_phone_numbers= new List<int> { "yr number","other number" };

Sachin Singh

OneSignal_playerid_fordevice","Another_onesignal_playerid -How it get and what is this

after setting the application in the dashboard of onesignal, use this

Notification myNotification = new Notification();
myNotification.contents = "Hii from sharpencode";
myNotification.small_icon = "icon.png";
myNotification.include_player_ids = new List<string> { "OneSignal_playerid_fordevice","Another_onesignal_playerid" };
myNotification.Send();