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Zulip Outage History

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

There were 10 Zulip outages since May 2020. The 5 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major March 31, 2026

March 2026: Partial outage

Detected Mar 31, 2026 8:26 PM EDT · Resolved Mar 31, 2026 9:22 PM EDT · Duration about 1 hour

Major March 26, 2026

March 2026: zulip.com outage

Detected Mar 26, 2026 10:04 AM EDT · Resolved Mar 26, 2026 2:09 PM EDT · Duration about 4 hours

Major January 14, 2026

January 2026: Service outage

Detected Jan 14, 2026 1:56 AM EST · Resolved Jan 14, 2026 2:39 AM EST · Duration 43 minutes

Minor December 19, 2025

December 2025: Image thumbnailing delays

Detected Dec 19, 2025 9:01 AM EST · Resolved Dec 19, 2025 10:34 AM EST · Duration about 2 hours

Minor August 14, 2025

August 2025: Some Apple push notifications were not sent

Detected Aug 14, 2025 10:16 AM EDT · Resolved Aug 14, 2025 11:58 AM EDT · Duration about 2 hours