We've published a detailed post-event analysis of the March 4th 2026 outage that disrupted our email services. We sincerely apologize for the inconvenience and thank you for your patience. Here’s what happened, why, and the steps we’re taking to prevent a recurrence: https://blog.runbox.com/2026/03/post-event-analysis-of-email-service-incident-march-4th-2026/
Post-Event Analysis of Email Service Incident March 4th, 2026 - Runbox Blog

On March 4th, our email services experienced a major outage caused by a cascade of hardware failures—multiple disks failed in quick succession, and a critical server went down, impacting virtual services. We’ve since replaced the failed hardware, rebuilt the affected systems, and fully restored service. No user data was lost, and we have been taking immediate steps to prevent a recurrence.

Runbox Blog
@runbox was looking forward to this, thanks for posting