# Bulk Capability Check

Efficiently delivering messages on a large scale requires confirming channel compatibility across numerous phone numbers. The Bulk Compatibility Check streamlines this process by evaluating many contacts simultaneously, enabling optimized communication strategies quickly and effectively.

## Use Cases

This feature is crafted for businesses that need to handle large volumes of phone numbers, allowing simultaneous verification of channel support to optimize bulk communication efforts.

* **Large-Scale Campaigns**: Ready your organization for mass messaging by verifying channel support across extensive contact lists.
* **Streamlined Efficiency**: Conduct batch processing to minimize preparation time, making it ideal for large-scale assessments.
* **Volume Handling**: Designed to efficiently manage and process large datasets, providing flexibility and capacity to handle comprehensive assessments.

## Authentication

Use your product token to authenticate. Find your product token in the [Channels App](https://www.cm.com/en-gb/app/channels/). The capability check can only be performed after RCS onboarding is completed and can only be done for the networks where your RCS agent is launched.

## Requirements/Recommendations

* Requires at least 500 unique phone numbers per request for a bulk check.
* It is advised to limit each request to a maximum of 10000 phone numbers to ensure optimal performance and processing efficiency.
* Please note that following the execution of this check, it is expected that messages will be sent to the RCS-capable numbers.
* This capability check cannot be used for all countries. Please confirm with your contact person.