The app supports Android 6.0 (Marshmallow) and above.

You can download the app from the Google Play Store. Search for "Bulk SMS Sender" and follow the installation instructions.

No, the app does not require an internet connection to send SMS messages. However, some features like contact synchronization with a desktop server may require an internet connection.

The app requires SMS permissions to send messages directly from your device.

1. The app needs access to your contacts to create groups and send messages to multiple recipients.

2.  

When you first launch the app, it will prompt you to grant necessary permissions. You can also manage permissions in your device’s settings under "App Permissions."

1. Some features, like sending SMS or accessing contacts, will not work without the required permissions.

2.  

Yes, the app does not share your data with third parties. All information is stored locally on your device.

Create a group, add contacts to it, and then select the group when sending a message.

1. Yes, you can customize each message before sending it.

2.  

There is no limit to the number of contacts you can add to a group.

Yes, but international SMS rates from your carrier will apply.

You can cancel the sending process by pressing the "Stop Sending" button.

Yes, you can sync the app with a desktop server to send messages remotely.

Ensure both your phone and desktop are on the same Wi-Fi network, and follow the setup instructions in the app.

Yes, the app supports sending messages in any language supported by your device.

Yes, you can set a custom delay in the "SMS Queue" settings.

Currently, the app only supports text-based SMS messages.