How automatically move the candidate when the HR sand a message (specific template)?

Summary

Automatically move a candidate to the Rejected Status after the HR sand a message using a specific template.

Content (required):

We would like to add in the Candidate Selection Process a conditions whereby if the HR send a message, using a specific template, the candidate is automatically moved to the state Rejected by Employer.

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Code Snippet (add any code snippets that support your topic, if applicable):