Microsoft SMTP AUTH Changes: Fix Your Email Now
Are you experiencing issues sending emails with Outlook.com, Hotmail.com, or Microsoft 365? Microsoft is phasing out Basic Authentication (username and password) in favor of OAuth (Modern Authentication) for third-party apps using SMTP, and it will be fully discontinued by September 2025.
In this guide, learn why these changes are happening, how they might affect your email setup, and what steps you can take to switch to Modern Authentication and keep your emails sending without interruption.