---
title: "Campaign Studio - March 10, 2020"
date: "2025-09-12T05:57:24+00:00"
summary: "Discover key updates for Campaign Studio: secure webhooks, improved email testing, and fixes for custom fields and integrations."
image:
type: "announcement"
url: "/campaign-studio/release/2020-03-10/79196-campaign-studio-march-10-2020"
id: "bc99819b-b4ba-4513-a8cd-7baaa0b905b3"
---

*   Change The word `[TEST]` is now added to the beginning of the subject line for `send example` emails.
    
*   Change Campaign Studio now has support for securing global webhooks.
    
*   Fix Users creating custom fields on large instances experienced time outs.
    
*   Fix Users were unable to configure their credentials using Twilio and OneSignal.