Platform Limits

You can send high volumes through the Trackly SMS API, but certain limits apply to protect platform stability and ensure fair usage.

API Limits

Limit	Value	Notes
Messages per bulk request	1,000	Use `POST /v2/send/bulk`
Contacts per bulk request	1,000	Use `POST /v2/contacts/bulk`
Revenue records per bulk request	1,000	Use `POST /v2/revenue/bulk`
History records per import request	1,000	Applies to sends, clicks, and revenue imports
API payload max size	5 MB	Per request
Contact payload max size	4,000 bytes	Per individual contact object
OTP metadata max size	1,024 bytes	Per OTP verification request

Messaging Limits

Limit	Value	Notes
Default send rate	17,000 messages/min	Per sending list, configurable by support
Message template max length	1,600 characters	Across all segment types
Stale message threshold	30 minutes	Messages queued longer than this are dropped
Free tier monthly limit	500 messages	Per account, resets monthly

Contact & Import Limits

Limit	Value	Notes
Contacts per CSV import	5,000	Via dashboard upload
Contacts per API bulk request	1,000	Via `POST /v2/contacts/bulk`

Journey Limits

Limit	Value	Notes
Max journey executions	1,000	Per journey enrollment batch
Max journey duration	30 days	Journeys automatically complete after this period

Billing Limits

Limit	Value	Notes
Billing block TTL	60 minutes	Accounts with expired billing are blocked for up to 60 minutes before re-check

Requesting Increases

If you need higher limits for any of the above, contact support at support@tracklysms.com. Include your account ID and the specific limit you need adjusted. Send rate increases require a review of your sending patterns and compliance history.

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API Limits

Messaging Limits

Contact & Import Limits

Journey Limits

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Requesting Increases

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API Limits & Best Practices

Send First SMS

​API Limits

​Messaging Limits

​Contact & Import Limits

​Journey Limits

​Billing Limits

​Requesting Increases

​Next Steps

API Limits & Best Practices

Send First SMS

API Limits

Messaging Limits

Contact & Import Limits

Journey Limits

Billing Limits

Requesting Increases

Next Steps