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

A critical incident affected email delivery, mobile notifications and support ticket creation across Atlassian Cloud products from 2025-12-27 02:48 UTC to 2025-12-27 05:20 UTC (2 h 32 min). Core Jira and Confluence functionality remained available. Atlassian attributed the issue to expired monitoring TLS certificates disrupting its metrics pipeline and confirmed all affected services were restored.