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Litmus Outage History

Every past Litmus outage tracked by IsDown, with detection times, duration, and resolution details.

There were 145 Litmus outages since November 2017. The 7 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major November 3, 2025

November 2025: Litmus application unavailable

Detected Nov 3, 2025 6:15 AM PST · Resolved Nov 3, 2025 12:46 PM PST · Duration about 7 hours

Major November 2, 2025

November 2025: Application unavailable

Detected Nov 2, 2025 11:47 PM PST · Resolved Nov 3, 2025 2:48 AM PST · Duration about 3 hours

Minor October 20, 2025

October 2025: Litmus Outage

Detected Oct 20, 2025 2:59 AM PDT · Resolved Oct 20, 2025 3:05 AM PDT · Duration 6 minutes

Major October 20, 2025

October 2025: Multiple failures due to upstream service provider

Detected Oct 20, 2025 2:58 AM PDT · Resolved Oct 21, 2025 7:10 AM PDT · Duration 1 day

Major July 25, 2025

July 2025: Yahoo! Mail Chrome email previews temporarily unavailable

Detected Jul 25, 2025 1:28 PM PDT · Resolved Aug 6, 2025 8:27 AM PDT · Duration 12 days

Major May 5, 2025

May 2025: Unable to send/share emails via Litmus Builder

Detected May 5, 2025 1:36 PM PDT · Resolved May 7, 2025 1:39 AM PDT · Duration 1 day

Minor April 24, 2025

April 2025: Incoming email tests are delayed

Detected Apr 24, 2025 8:36 AM PDT · Resolved Apr 24, 2025 9:26 AM PDT · Duration about 1 hour