Bitbucket change history: Outbound Email, Mobile Push Notifications, and Support Ticket Delivery Impacting All Cloud Products

Bitbucket reported a critical incident affecting email, mobile push notifications and support ticket delivery across cloud products, recorded from 2025-12-27 04:42 UTC to 2025-12-27 05:20 UTC (37 min), then fully restored. The postmortem reports impact starting at 02:48 UTC and attributes the issue to expired monitoring TLS certificates disrupting the metrics pipeline.