email sending failure

The email sending failure tag covers issues where users cannot send emails through Microsoft Outlook or other email clients. Recent discussions highlight a major Microsoft Outlook outage on July 10, 2025, that affected thousands of users in the UK and beyond. During this outage, 5% of reported problems involved an inability to send emails, while login and server connection issues were more prevalent. The outage impacted both personal and Microsoft 365 business users, leading to widespread frustration. Microsoft acknowledged the problem and worked on a resolution. This tag is relevant for troubleshooting email sending failures, understanding service disruptions, and finding updates on related Microsoft outages.