Need an access key?
Access keys are issued to agents on a Best SMS Bulk account. Use the Register or Account tab to create or sign in to your account, then ask your administrator to generate an agent access key in the dashboard.
Active Sessions
Saved Accounts
BSB OneBox
Choose how to open chat
You are signed in multiple ways. Pick which account to use in OneBox (virtual key vs website login).
Keep App Running
To receive notifications and keep chats updated, disable battery optimization for this app.
Disable Battery Optimization
Open Settings on your phone
Go to Apps or Applications
Find and tap BSB OneBox (or your browser)
Tap Battery
Select "Don't optimize" or "Unrestricted"
Samsung Devices (Extra Step)
Go to Settings → Device Care → Battery
Tap App Power Management
Disable "Put unused apps to sleep"
Add this app to "Never sleeping apps"
Xiaomi/MIUI Devices
Go to Settings → Apps → Manage Apps
Find the app and enable "Autostart"
In Battery Saver, set to "No restrictions"
Huawei Devices
Go to Settings → Battery → App Launch
Find the app and disable "Manage Automatically"
Enable all three toggles manually
Enable Background App Refresh
Open Settings
Go to General → Background App Refresh
Make sure it's turned ON
Enable it for Safari (or your browser)
Enable Notifications
Go to Settings → Notifications
Find Safari (or your browser)
Enable Allow Notifications
Set Alert Style to Banners or Alerts
Low Power Mode
Important: Low Power Mode can stop background updates.
Disable it when you need to receive chat notifications.
Go to Settings → Battery
Turn OFF Low Power Mode
Add to Home Screen
For best experience, add this app to your home screen: