Quick answer
Twilio documents combined account messaging rate as 2,000 messages per second. Twilio Error 63017 documents the combined throughput ceiling.
Verified Aug 22, 2026Official source
Current limits
| Constraint | Current value | Scope | Verified source |
|---|---|---|---|
| combined account messaging rateTwilio Error 63017 documents the combined throughput ceiling. | 2,000 messages per second | Account plus subaccounts | TwilioAug 22, 2026 |
Why does this limit matter?
Spreading sends across subaccounts does not bypass a limit measured across the parent account family.
This value is scoped to Account plus subaccounts; a different plan, runtime, model, endpoint, region, or account can produce a different effective constraint.
What should you check?
- Aggregate account and subaccount sends by second and channel.
- Confirm the exact plan, model, runtime, endpoint, region, and account that serve the failing workload.
- Record the observed value, response headers or configuration, timestamp, and source without logging secrets.
Important caveats
- Individual channels can have much lower defaults.
- Treat the official source and live account configuration as authoritative if they differ from this verified snapshot.
HyperObserve reports the documented platform constraint. Your application, SDK, gateway, provider, region, or account can impose a lower effective limit.
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