What is “Message Filtered Carrier Violation” error?
The 30007 SMS error code is associated with Referrizer’s messaging provider Twilio’s messaging service and indicates that a sent message was filtered or blocked, often due to carrier violations or spam detection. This prevents delivery to the recipient’s device. This error is not related to Referrizer’s platform or your account configuration.
Each carrier uses different filtering logic and algorithms. A message blocked by one carrier (e.g., AT&T) might be delivered by another (e.g., Verizon), depending on the content, volume, and sender history.
Common Triggers in Messages
Based on carrier patterns, the following elements often lead to Error 30007:
- Spammy language: Terms like “FREE,” “LAST CHANCE,” or “Don’t miss out!” and urgent phrasing tend to trigger spam filters.
- Unclear sender identity: Messages without a clear business name or sender ID.
- Lack of Opt-out Mechanism: Promotional or informational messages without clear opt-out instructions (e.g., STOP language).
- Formatting issues: Use of ALL CAPS, excessive punctuation, emojis, misspellings, or robotic language.
- Compliance gaps: Sending to unverified or recycled numbers, or high-volume sends without A2P 10DLC registration.
How to Resolve or Avoid It
Referrizer’s Role in Preventing Error 30007
Referrizer ensures compliance with key carrier requirements to maximize your SMS deliverability:
- We mandate A2P 10DLC registration through The Campaign Registry for all clients.
- Every message sent via our platform automatically includes standard opt-out language (“Reply STOP to OptOut”).
- When a contact replies “STOP,” our system automatically opts them out to prevent further messaging.
- Referrizer provides flexible manual opt-out options, allowing you to remove contacts individually or in bulk via import.
Minimizing Filtering Issues
These built-in features help minimize filtering issues like Error 30007, which are driven by carrier policies, not Referrizer’s system.
What you can do:
- Verify opt-ins: Only send to confirmed subscribers (e.g., via double opt-in). Reconfirm every 18 months and honor opt-outs immediately. Unsolicited or recycled numbers also increase risks. Track complaint rates—if high, carriers may flag your number.
- Include clear sender ID in each promotional message: Carriers require promotional messages to clearly identify the business to build trust and comply with regulations. Make sure to always include your Business Name.
- Avoid all caps and punctuation: Starting with “LAST CHANCE!” in all caps and using exclamation points can mimic aggressive spam.
- Avoid forbidden topics: Steer clear of high-risk categories like loans, cannabis, or debt relief.
Content best practices:
Use plain text, limit links/redirects, and ensure messages are relevant. No emojis, excessive punctuation, or poor grammar. Words like “FREE” and urgency terms (e.g., “last chance”, “limited time”) are red flags in many carrier systems.
Bad message:
LAST CHANCE! Jane, book your $99 [BUSINESS DEAL] by midnight and get a FREE XYZ. Don’t miss out! [LINK]
Reply STOP to OptOut
Good message:
Jane, [BUSINESS NAME] here. Schedule your $99 [BUSINESS DEAL] and receive a complimentary XYZ. Offer ends tonight.
Reply STOP to OptOut.
Resolving Suspected Incorrect Filtering
If your messages comply with guidelines but still receive Error 30007:
- Gather at least three examples from the past three days, including contact details, message content, and error timestamps.
- Submit these to Referrizer’s Support team for review. We’ll collaborate with our provider(s) to investigate and try to resolve the issue. Carriers can be really slow to respond, but the Referrizer Support team will do their best to assist you with these issues.