This article provides guidelines to reduce the risk of your SMS messages being filtered, and not delivered by mobile networks when using Concours Pro.
Please read the Concours Pro Phone Messaging Policy before proceeding.
Contents
Consent and Opt-in
- Send messages only to users who have opted in.
- Include clear identification and opt-out instructions, such as “Reply STOP to unsubscribe”.
- Reconfirm consent every 18 months, especially if you contact users frequently.
- Monitor and address high opt-out rates or complaints.
Use Case and Sender Selection
- Adhere to the SMS guidelines specific to the countries you are targeting.
- Avoid prohibited message categories, especially in the US and Canada.
- Use the minimum number of phone numbers necessary, and avoid “snowshoeing”.
- Ensure compliance with application-to-person (A2P) messaging regulations.
Message Contents
- Avoid using shared URL shorteners such as TinyURL or Bitly; use URLs specific to your business.
- Do not include emojis, excessive special characters, or poor grammar.
- Avoid sending illegal content or messages forbidden by carriers.
Troubleshooting Filtering Issues
If you suspect your messages are being incorrectly filtered, collect undelivered message examples with error code 30007 and contact support for assistance.
