Litmus Outage History

Litmus major outage View live status →

Litmus had 19 outages in the last 2 years totaling 3679h 26m of downtime — averaging 0.8 incidents per month.

There were 19 Litmus outages since June 20, 2024 totaling 3679h 26m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.litmus.com

Major April 17, 2026

Builder documents not loading when Partials are present

Detected by Pingoru
Apr 17, 2026, 03:37 PM UTC
Resolved
Apr 17, 2026, 04:56 PM UTC
Duration
1h 19m
Affected: Litmus Application
Timeline · 3 updates
  1. identified Apr 17, 2026, 03:37 PM UTC

    We've identified an issue where Builder documents taking advantage of Partials are not loading. Our team is working to implement a solution as soon as possible.

  2. identified Apr 17, 2026, 04:12 PM UTC

    Our team is continuing to work on a fix. We have identified the root cause and are actively implementing a solution.

  3. resolved Apr 17, 2026, 04:56 PM UTC

    This issue has been resolved.

Read the full incident report →

Major November 3, 2025

Litmus application unavailable

Detected by Pingoru
Nov 03, 2025, 02:15 PM UTC
Resolved
Nov 03, 2025, 08:46 PM UTC
Duration
6h 30m
Affected: Litmus Application
Timeline · 4 updates
  1. investigating Nov 03, 2025, 02:15 PM UTC

    We are currently investigating the issue and will provide an update as soon as possible.

  2. monitoring Nov 03, 2025, 02:38 PM UTC

    The application is now available again and our engineering team is monitoring the situation.

  3. monitoring Nov 03, 2025, 04:02 PM UTC

    We are continuing to monitor for any further issues.

  4. resolved Nov 03, 2025, 08:46 PM UTC

    This issue has been resolved.

Read the full incident report →

Critical November 3, 2025

Application unavailable

Detected by Pingoru
Nov 03, 2025, 07:47 AM UTC
Resolved
Nov 03, 2025, 10:47 AM UTC
Duration
3h
Affected: Litmus Application
Timeline · 3 updates
  1. investigating Nov 03, 2025, 07:47 AM UTC

    We are currently investigating this issue.

  2. monitoring Nov 03, 2025, 09:24 AM UTC

    The application is now available, our engineering team is monitoring.

  3. resolved Nov 03, 2025, 10:47 AM UTC

    This incident has been resolved.

Read the full incident report →

Major October 20, 2025

Multiple failures due to upstream service provider

Detected by Pingoru
Oct 20, 2025, 09:58 AM UTC
Resolved
Oct 21, 2025, 02:07 PM UTC
Duration
1d 4h
Affected: Litmus ApplicationAOL Mail (Chrome)AOL Mail (Edge)Email AnalyticsApple 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)
Timeline · 5 updates
  1. monitoring Oct 20, 2025, 09:58 AM UTC

    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.

  2. monitoring Oct 20, 2025, 09:58 AM UTC

    We are continuing to monitor for any further issues.

  3. identified Oct 20, 2025, 01:21 PM UTC

    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.

  4. monitoring Oct 20, 2025, 10:43 PM UTC

    The upstream service provider issues have resolved. We're monitoring for any residual issues.

  5. resolved Oct 21, 2025, 02:07 PM UTC

    These issues have been resolved.

Read the full incident report →

Major May 6, 2025

Unable to send/share emails via Litmus Builder

Detected by Pingoru
May 06, 2025, 09:45 PM UTC
Resolved
May 06, 2025, 10:00 PM UTC
Duration
14m
Affected: Litmus Application
Timeline · 3 updates
  1. investigating May 05, 2025, 08:36 PM UTC

    We are currently investigating an issue that's preventing emails shared/sent via Litmus Builder from being received.

  2. investigating May 07, 2025, 08:37 AM UTC

    This issue has been resolved. Any email that was not received will need to be resent from Builder.

  3. resolved May 07, 2025, 08:39 AM UTC

    This issue has been resolved. Any email that was not received will need to be resent from Builder.

Read the full incident report →

Minor April 24, 2025

Incoming email tests are delayed

Detected by Pingoru
Apr 24, 2025, 03:36 PM UTC
Resolved
Apr 24, 2025, 04:22 PM UTC
Duration
46m
Affected: Litmus Application
Timeline · 2 updates
  1. investigating Apr 24, 2025, 03:36 PM UTC

    We are currently investigating an issue where emails sent to your Litmus test address are delayed/not arriving.

  2. resolved Apr 24, 2025, 04:22 PM UTC

    This issue has been resolved. If you have not received your Litmus test already, please resend your email using your Litmus test address.

Read the full incident report →

Major April 13, 2025

Email Analytics Outage

Detected by Pingoru
Apr 13, 2025, 02:14 PM UTC
Resolved
Apr 13, 2025, 10:08 PM UTC
Duration
7h 53m
Affected: Email Analytics
Timeline · 3 updates
  1. investigating Apr 13, 2025, 02:14 PM UTC

    Email Analytics is currently down and we are not receiving data as of 9:00am EDT.

  2. monitoring Apr 13, 2025, 05:05 PM UTC

    Email Analytics processing has resumed as of 12:10pm EDT. We are monitoring, but the issue is resolved.

  3. resolved Apr 13, 2025, 10:08 PM UTC

    After careful monitoring, we are now closing this incident. Original issue was resolved at 12:10pm EDT with no impact after that.

Read the full incident report →

Minor December 9, 2024

Litmus Application slowdown

Detected by Pingoru
Dec 09, 2024, 04:34 PM UTC
Resolved
Dec 09, 2024, 07:46 PM UTC
Duration
3h 12m
Affected: Litmus Application
Timeline · 3 updates
  1. investigating Dec 09, 2024, 04:34 PM UTC

    We are investigating an issue causing intermittent slowdown in the Litmus application.

  2. identified Dec 09, 2024, 05:11 PM UTC

    We've identified the issue and are working to restore Litmus as soon as possible.

  3. resolved Dec 09, 2024, 07:46 PM UTC

    This issue has been resolved.

Read the full incident report →

Major November 26, 2024

Unable to send emails from Putsmail

Detected by Pingoru
Nov 26, 2024, 03:25 PM UTC
Resolved
Nov 26, 2024, 05:09 PM UTC
Duration
1h 44m
Timeline · 2 updates
  1. investigating Nov 26, 2024, 03:25 PM UTC

    We are currently investigating an issue with sending emails from Putsmail.

  2. resolved Nov 26, 2024, 05:09 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor November 14, 2024

Delay in processing incoming email tests

Detected by Pingoru
Nov 14, 2024, 02:31 PM UTC
Resolved
Nov 14, 2024, 05:45 PM UTC
Duration
3h 14m
Affected: Litmus Application
Timeline · 4 updates
  1. investigating Nov 14, 2024, 02:31 PM UTC

    We are currently investigating delays in processing incoming email tests. If you are able to test using raw HTML, you can use that method in the meantime.

  2. identified Nov 14, 2024, 03:17 PM UTC

    The issue has been identified and a solution is being implemented.

  3. monitoring Nov 14, 2024, 04:01 PM UTC

    A fix has been implemented and we are monitoring the results. If your test is not showing in your account, please resend it.

  4. resolved Nov 14, 2024, 05:45 PM UTC

    This incident has been resolved.

Read the full incident report →

Major November 14, 2024

Legacy Emails view unavailable

Detected by Pingoru
Nov 14, 2024, 05:26 AM UTC
Resolved
Nov 14, 2024, 08:44 AM UTC
Duration
3h 17m
Affected: Litmus Application
Timeline · 2 updates
  1. investigating Nov 14, 2024, 05:26 AM UTC

    Following database maintenance we're investigating a performance regression that's made this feature unusable.

  2. resolved Nov 14, 2024, 08:44 AM UTC

    This incident has been resolved.

Read the full incident report →

Major November 1, 2024

Incoming email tests are not being processed

Detected by Pingoru
Nov 01, 2024, 01:27 PM UTC
Resolved
Nov 01, 2024, 02:47 PM UTC
Duration
1h 20m
Affected: Litmus Application
Timeline · 4 updates
  1. investigating Nov 01, 2024, 01:27 PM UTC

    We are currently investigating errors in processing incoming email tests. If you are able to test using raw HTML, we recommend using that method in the meantime.

  2. identified Nov 01, 2024, 01:51 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Nov 01, 2024, 02:24 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Nov 01, 2024, 02:47 PM UTC

    This has been resolved. If you sent in a test during the impacted period, it should come through once we have caught up. You can send the test again if you prefer.

Read the full incident report →

Major October 31, 2024

Intermittent errors on some Personalize content types

Detected by Pingoru
Oct 31, 2024, 10:22 AM UTC
Resolved
Oct 31, 2024, 12:11 PM UTC
Duration
1h 48m
Affected: Litmus Personalize
Timeline · 3 updates
  1. investigating Oct 31, 2024, 10:22 AM UTC

    We are currently investigating the issue impacting some server requests. If you are seeing an error, a page refresh should help.

  2. monitoring Oct 31, 2024, 11:57 AM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Oct 31, 2024, 12:11 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor July 31, 2024

Email Analytics Processing Delay

Detected by Pingoru
Jul 31, 2024, 02:33 AM UTC
Resolved
Jul 31, 2024, 01:20 PM UTC
Duration
10h 47m
Affected: Email Analytics
Timeline · 3 updates
  1. identified Jul 31, 2024, 02:33 AM UTC

    We are currently experiencing a delay processing Email Analytics data. The root cause is an issue with one of our hosting providers. We expect that once that issue is resolved we will fully process all data without loss.

  2. monitoring Jul 31, 2024, 05:59 AM UTC

    We’re seeing improved Email Analytics processing rates and expect that most customer data is up to date. We will keep monitoring the situation.

  3. resolved Jul 31, 2024, 01:20 PM UTC

    This incident has been resolved.

Read the full incident report →

Major July 16, 2024

Errors on pages related to Email Analytics

Detected by Pingoru
Jul 16, 2024, 11:17 AM UTC
Resolved
Jul 16, 2024, 12:34 PM UTC
Duration
1h 17m
Affected: Litmus Application
Timeline · 3 updates
  1. investigating Jul 16, 2024, 11:17 AM UTC

    We are currently investigating issues in areas of the app that relate to Email Analytics. You may experience errors when loading Analytics pages or when trying to create tracking codes for example.

  2. monitoring Jul 16, 2024, 11:49 AM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jul 16, 2024, 12:34 PM UTC

    This incident has been resolved.

Read the full incident report →

Major June 20, 2024

Link Check results unavailable

Detected by Pingoru
Jun 20, 2024, 03:34 PM UTC
Resolved
Jun 21, 2024, 08:25 AM UTC
Duration
16h 51m
Affected: Litmus Application
Timeline · 2 updates
  1. investigating Jun 20, 2024, 03:34 PM UTC

    We are currently investigating an issue with our Link Check service. In the Previews & QA tab, your results may continually load and in Email Guardian, the Links and Images section will appear as pending in the meantime.

  2. resolved Jun 21, 2024, 08:25 AM UTC

    This incident has been resolved.

Read the full incident report →