Ensure Compliance: Make sure that you are compliant with local and international regulations regarding phone calls and communications. Violating these regulations can lead to your calls being marked as spam.
Use Legitimate Phone Numbers: Use verified and legitimate phone numbers for your calls. Avoid using virtual or disposable phone numbers, as these are more likely to be associated with spam.
Provide Caller ID Information: Ensure that your calls display accurate and relevant caller ID information. Misleading or generic caller IDs may trigger spam warnings.
Avoid Robocalls: Automated and recorded messages are often associated with spam calls. If possible, engage in genuine, real-time conversations with recipients.
Obtain Consent: If you are making calls for marketing or informational purposes, ensure that you have the consent of the recipients. Unsolicited calls are more likely to be flagged as spam.
Monitor Call Frequency: Avoid making an excessive number of calls to the same numbers in a short period. High call frequency can trigger spam alerts.
Authenticate Your Calls: Implement technologies like STIR/SHAKEN (Secure Telephone Identity Revisited/Signature-based Handling of Asserted Information Using Tokens) to authenticate your calls. This is a framework designed to combat caller ID spoofing.
Respond to Complaints: If recipients mark your calls as spam or complain, address those concerns promptly. Continuing to make calls that recipients find unwanted can lead to spam labeling.
Remember that the effectiveness of these measures can vary, and the ultimate decision to flag a call as spam lies with the recipient's phone carrier or spam detection service. If you believe your legitimate calls are being incorrectly flagged, you may need to contact the relevant carrier or service provider to address the issue.