moera throttle

The moera throttle tag covers Microsoft's new tenant-level restriction on outbound email sent from the shared onmicrosoft.com namespace (MOERA). This limit caps external recipients at 100 per organization per 24-hour rolling window, with a staged rollout starting with trial tenants in October 2025 and reaching the largest tenants by June 1, 2026. Discussions focus on the impact of this throttle on email delivery, migration strategies to custom domains, and compliance with the new policy. The tag is relevant for IT administrators managing Microsoft 365 tenants who need to understand and prepare for these outbound email limits.