Product update 3.10.10 | February 2026

This release may be small, but it delivers meaningful improvements. We’ve improved webhook transparency and resolved several bugs that previously caused unnecessary friction. These changes contribute to a smoother and more reliable experience across SendPro. In this article you will learn more about:

Webhook improvements

Webhook notifications now include demotion information. This makes it clearer when and why a webhook has been moved to a slower group, helping teams more easily understand delivery behavior and troubleshoot delays.

These notifications appear in the top-right corner of the screen, under the notification bell icon, just like all other system alerts in Spotler SendPro.

Bug fixes

  • Fixed an issue where header encoding could break the unsubscribe header in Apple Mail.
  • Fixed a bug where webhook services would restart when calling an unreachable URL.
  • Fixed an issue in the bounce handler that could impact event processing.