Why are my messages being filtered by carriers?

Last updated: November 5, 2026

Carrier filtering happens when a mobile carrier blocks or limits message delivery because the message appears risky, unwanted, or non-compliant.

Why carrier filtering happens

  • The message content looks spam-like or high risk.

  • The sender sends repetitive or high-volume messages.

  • Contacts have not opted in or are not engaging.

  • The message includes URLs, wording, or patterns that carriers commonly filter.

  • The carrier applies temporary protections to reduce unwanted messages.

How to reduce carrier filtering

  1. Send messages only to opted-in contacts.

  2. Keep messages concise and relevant.

  3. Avoid repetitive wording across large audiences.

  4. Avoid risky promotional language.

  5. Monitor undelivered messages and response rates.

  6. Collect message IDs before contacting support about suspected incorrect filtering.

Troubleshooting

  • If messages are repeatedly filtered, rewrite the content and reduce risky wording.

  • If filtering appears incorrect, gather message IDs and contact Whippy Support.

  • If filtered messages appear delivered, monitor contact engagement and replies as an additional signal.

  • If this affects many sends, review consent, content, and sending patterns before continuing.