Phone System · 1 min read
Error 30008: Unknown Delivery Error
What this error means
Error 30008 means the message wasn't delivered, but the carrier returned a generic error with no specific reason. You need to troubleshoot to find the cause.
Possible causes
- A temporary carrier issue.
- A long message split into many segments.
- Special characters, emojis, or encoding issues.
- A problem specific to that destination.
- An intermittent routing issue.
How to troubleshoot
- Simplify the message. Send a short, plain-text test with no emojis, special characters, or links.
- Check message length. Very long messages are split into segments, and some carriers handle them poorly. Shorten the message if you can.
- Test another recipient. Send the same message to a different mobile number. If it arrives, the issue is likely specific to the original destination.
- Retry later. If the cause is a temporary carrier issue, a later attempt may succeed.
- Look for patterns. If many messages fail with 30008, note the message IDs, times, and destination numbers and contact support.
Tips
- Avoid unusual Unicode characters copied from documents.
- Keep important texts concise.