Prevent phone numbers from being flagged as spam - Microsoft Learn

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1. Requirements and best practices for voice communications “Avoid making a high volume of calls in a short period.” Use Caller ID: Ensure that the customer’s caller ID is correctly set up and displays accurate information. This practice helps recipients recognize the caller and reduces the likelihood of being reported as spam. You can apply the Azure Communication process for Caller Name Delivery (CNAM) set up in Define your caller identity.

   In Caller ID reputation and spam labeling

2. Requirements and best practices for voice communications “Regularly monitor call patterns to identify any unusual activity that may trigger spam filters.” Use Caller ID: Ensure that the customer’s caller ID is correctly set up and displays accurate information. This practice helps recipients recognize the caller and reduces the likelihood of being reported as spam. You can apply the Azure Communication process for Caller Name Delivery (CNAM) set up in Define your caller identity.

   In Caller ID reputation and spam labeling

3. Provide Opt-Out Options: Offer recipients an easy way to opt-out of receiving calls. This action can be done through automated systems or customer service representatives. “Remove inactive or incorrect numbers by regular update of customer’s contact list.” Prohibited uses of communications services

   In Data decay and refresh cycles

4. Provide Opt-Out Options: Offer recipients an easy way to opt-out of receiving calls. This action can be done through automated systems or customer service representatives. “This practice reduces the chances of calling numbers that may report customer’s calls as spam.” Prohibited uses of communications services

   In Data hygiene