Multiple failures due to upstream service provider

Incident Report for Litmus

Resolved

These issues have been resolved.
Posted Oct 21, 2025 - 10:07 EDT

Monitoring

The upstream service provider issues have resolved. We're monitoring for any residual issues.
Posted Oct 20, 2025 - 18:43 EDT

Identified

The upstream service provider issues are ongoing and affecting multiple other services, such as Litmus Previews and Litmus Analytics. We are attempting to fix the issue and are working with the service provider to restore functionality.
Posted Oct 20, 2025 - 09:21 EDT

Update

We are continuing to monitor for any further issues.
Posted Oct 20, 2025 - 05:58 EDT

Monitoring

An upstream service provider has been experiencing problems since 08:11 UTC affecting some features. Their services are now recovering. We're monitoring for residual problems.
Posted Oct 20, 2025 - 05:58 EDT
This incident affected: Litmus Application, Email Analytics and Email Previews (AOL Mail (Chrome), AOL Mail (Edge), Apple Mail 16 (macOS 13), Apple Mail 16 Dark (macOS 13), Color Blindness (Simulated), G Suite (Chrome), G Suite (Edge), G Suite (Firefox), Gmail (Chrome), Gmail (Edge), Gmail App (Android 11), Gmail App (Android 13), Gmail App (iOS 18), Gmail App Dark (Android 11), Gmail App Dark (Android 13), Gmail App Dark (iOS 18), GMX.de (Chrome), GMX.de (Edge), GMX.de (Firefox), IBM Notes 9 (Windows 10), IBM Notes 10 (Windows 10), iPad (Gen 9) (iOS 18), iPad (Gen 9) Dark (iOS 18), iPad (Gen 10) (iOS 18), iPad (Gen 10) Dark (iOS 18), iPad mini (Gen 6) (iOS 18), iPad mini (Gen 6) Dark (iOS 18), iPad Pro (11 inch) (iOS 18), iPad Pro (11 inch) Dark (iOS 18), iPad Pro (12.9 inch) (iOS 18), iPad Pro (12.9 inch) Dark (iOS 18), iPhone 14 (iOS 16), iPhone 14 Dark (iOS 16), iPhone 14 Pro Max (iOS 16), iPhone 14 Pro Max Dark (iOS 16), iPhone 15 (iOS 17), iPhone 15 Dark (iOS 17), iPhone 15 Plus (iOS 17), iPhone 15 Plus Dark (iOS 17), iPhone 16 (iOS 18), iPhone 16 Dark (iOS 18), iPhone 16 Plus (iOS 18), iPhone 16 Plus Dark (iOS 18), iPhone 16 Pro (iOS 18), iPhone 16 Pro Dark (iOS 18), iPhone 16 Pro Max (iOS 18), iPhone 16 Pro Max Dark (iOS 18), iPhone 17 (iOS 26), iPhone 17 Dark (iOS 26), iPhone 17 Pro (iOS 26), iPhone 17 Pro Dark (iOS 26), iPhone SE (3rd Generation) (iOS 18), iPhone SE (3rd Generation) Dark (iOS 18), Mail.ru (Chrome), Mail.ru (Edge), Mail.ru (Firefox), Office 365 (Chrome), Office 365 (Edge), Office 365 (Firefox), OL Office 365 (Windows 10), OL Office 365 120 DPI (Windows 10), OL Office 365 120 DPI Dark (Windows 10), OL Office 365 Dark (Windows 10), Outlook.com (Chrome), Outlook.com (Edge), Outlook.com (Firefox), Outlook.com Dark (Chrome), Outlook.com Dark (Firefox), Outlook 2007 (Windows 10), Outlook 2010 (Windows 10), Outlook 2013 (Windows 10), Outlook 2013 120 DPI (Windows 10), Outlook 2016 (Windows 10), Outlook 2016 120 DPI (Windows 10), Outlook 2019 (Windows 10), Outlook 2019 120 DPI (Windows 10), Outlook 2021 (Windows 10), Outlook 2021 120 DPI (Windows 10), Outlook 2021 Dark (Windows 10), Outlook (Android 11), Outlook Dark (Android 11), Outlook for Mac (macOS 15), Outlook for Mac Dark (macOS 15), Outlook for Windows (Windows 11), Outlook for Windows Dark (Windows 11), Outlook App (iOS 18), Outlook App Dark (iOS 18), Plain Text (Text-only view), T-Online.de (Chrome), T-Online.de (Edge), T-Online.de (Firefox), Thunderbird 60 (Windows 10), Web.de (Chrome), Web.de (Edge), Web.de (Firefox), Yahoo Mail (Chrome), Yahoo! Mail (Edge)).