The "4470: Message filtered" error typically indicates that your message has been blocked by carriers due to filtering.
Possible Causes
Content Issues: Certain keywords or phrases in your message may trigger carrier filters. It's advisable to review your message content and avoid using terms that might be flagged .
High Report Rate: If your number has been reported frequently, carriers might block messages from it .
Non-compliant Messaging: Ensure your messages comply with carrier guidelines. Adding "Reply STOP to opt out" can sometimes help reduce filtering .
Possible Solutions
To troubleshoot, try sending a simple message like "hello" to your personal number. If it delivers, the issue is likely with the message content. If not, it might be the number itself .
Is this billed?
Yes, this error is billed by the carriers
Are contacts that return this error marked as “invalid”?
No, contacts that return this error are not marked as “invalid” in your Textla contact list.