June 1, 2026
We've removed all size-based limitations on webhooks. Previously, sheets with more than 20,000 rows, 500,000 cells, or 400 columns could not use webhooks, which meant that integrations and automations stopped working as sheets grew. That restriction is now gone. You can create, enable, disable, and update webhooks on sheets of any size, and callbacks are delivered reliably for all events regardless of scale. If you've built integrations using the Smartsheet API, your existing webhook configurations will continue to work — no code changes needed. As your sheets grow, your automations grow with them. Learn More.
Environment Availability: Commercial US, Commercial EU, Commercial AU
Plan Availability: Business, Enterprise, Advanced Work Management
Subscription Model Availability: Legacy model and User model