Release Overview

Sim v0.5.111 is now available with several improvements to webhook handling and email integration. This incremental release focuses on reliability improvements and standards compliance.

New Features & Improvements

Webhook Enhancements

• Deduplication & Custom ACK: Webhooks now support deduplication logic with configurable acknowledgment settings, improving reliability for webhook-driven workflows
• Non-Polling Execution Optimization: Non-polling webhook executions have been moved off trigger.dev infrastructure, reducing external dependencies and improving performance

Gmail Integration Fix

• RFC 2047 Compliance: The Gmail integration now properly encodes subject headers for non-ASCII characters using RFC 2047 encoding, ensuring compatibility with email standards

What Developers Need to Know

If you're using webhooks in Sim, the new deduplication features can help prevent duplicate event processing. Check the documentation for configuring custom acknowledgment behavior for your use case.

For Gmail integration users, subject headers with non-ASCII characters (e.g., accented letters, emoji, non-Latin scripts) will now be properly encoded automatically.