Zulip had 9 outages in the last 2 years totaling 14h 13m of downtime — averaging 0.4 incidents per month.
There were 9 Zulip outages since June 11, 2025 totaling 14h 13m of downtime. Each is summarised below — incident details, duration, and resolution information.
We have identified that we are failing to serve previews of external images linked from Zulip messages.
This incident has been resolved.
We are currently investigating this issue.
The issue has been identified and a fix is being implemented.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are currently investigating this issue.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are currently investigating this issue.
A fix has been implemented and we are monitoring the results.
We are continuing to monitor for any further issues.
This incident has been resolved.
We've experienced a service outage, and we're investigating.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We're investigating delays generating image thumbnails.
We've cleared the image thumbnailing backlog, and are monitoring the fix.
This incident has been resolved.
We believe this issue to be related to AWS' ongoing global outage.
We have failed over our outgoing email service, and backlogged messages have completed being sent.
This incident has been resolved.
A very small minority of Apple push notifications failed to be delivered since Aug 13 at 03:04 UTC; overall, this was 0.04% of notifications which were affected.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
From 05:22 to 13:42 UTC, incoming email integrations (to email addresses @streams.zulipchat.com) were dropped, due to an improper configuration change during a deploy. Unfortunately, we do not have access to the bounced messages, so any incoming emails in this time frame have been lost.