Share this article with your IT or Security team. Blocking ContactMonkey endpoints causes Add-in failures, missing images, and inaccurate analytics.
Please reach out to support@contactmonkey.com for the full list of endpoints.
Prerequisites
- Know your ContactMonkey data region (US, CA, EU, or AU). Region determines which URLs to allowlist.
- Involve an IT or Security admin who manages firewalls, proxies, browser/device policies (Intune or Group Policy), or email security tools (Microsoft Defender, Proofpoint, Mimecast).
What is an endpoint?
An endpoint is a domain or URL that ContactMonkey uses to load the app and Outlook Add-in, display email images and assets, and record tracking events (opens and clicks). If an endpoint is blocked, ContactMonkey may not load or may not track engagement accurately.
Troubleshooting
| Symptom | What to ask IT |
| Outlook Add-in is blank, won't load, or shows an error | Confirm ContactMonkey endpoints are not blocked and that trusted URLs are configured for your region. |
| Images missing or broken in the Email Builder | Allow access to the region-appropriate ContactMonkey asset URLs and confirm trusted URL configuration. |
| Opens or clicks appear inflated (ghost clicks) | Safelist ContactMonkey tracking domains in your email security tool to stop automated scanning from registering as engagement. |
Related Articles
- Configuring ContactMonkey’s Trusted URLs in Group Policy (Intune steps here) — Step-by-step guide to adding trusted URLs for managed environments
- Safelisting ContactMonkey Domains for Accurate Tracking — How to configure email security tools to prevent false tracking data
- Troubleshooting Outlook Add-in Loading Errors — Broader Add-in troubleshooting for blank screens and errors
- Excessive Link Clicks in Campaign Statistics (Ghost Clicks) — Detailed explanation of ghost clicks and how to resolve them
- Images Not Loading in the Email Builder — Troubleshooting steps for broken or missing images, including endpoint-related causes