What does “Message Rejected by Recipient Carrier” mean?

Last updated: November 5, 2026

A “Message Rejected by Recipient Carrier” error means the recipient’s mobile carrier rejected the SMS before it reached the recipient’s device.

Common causes

  • The recipient carrier blocked the sender.

  • The recipient blocked your number.

  • The recipient’s device is offline, out of service, or unavailable.

  • The recipient’s SMS inbox is full.

  • The recipient’s mobile service is suspended.

  • The carrier is experiencing congestion or a temporary outage.

What to do

  1. Confirm the recipient’s phone number is correct and formatted properly.

  2. Ask the recipient to confirm your number is not blocked.

  3. Ask the recipient to confirm their phone is powered on and connected to a mobile network.

  4. Ask the recipient to check whether their SMS inbox is full.

  5. If their mobile service is suspended, the recipient must resolve it with their carrier.

  6. If the issue persists, contact Whippy Support for carrier-side review.

Tips

  • Double-check phone numbers before sending automated or bulk messages.

  • If you suspect filtering or spam reports, review message content for compliance.

  • Retry later if the recipient may be temporarily out of service.

Troubleshooting

  • If rejection happens immediately, a carrier block may be involved.

  • If one recipient is affected, ask them to check blocking, service, and device status.

  • If many recipients are affected, contact Whippy Support.