outbound limits

Microsoft quietly backed away from a planned per‑mailbox external recipient cap for Exchange Online after sustained customer pushback, saying the proposed Mailbox External Recipient Rate Limit (often described as a 2,000‑external‑recipients per mailbox in a 24‑hour sliding window policy) will...

Microsoft has quietly abandoned the planned per‑mailbox Mailbox External Recipient Rate Limit (commonly discussed as the 2,000‑recipient ERR/MERRL cap) after customers warned the rule would break legitimate workflows and integrations, and the Exchange team says it will pursue smarter, more...

Microsoft’s Exchange team has announced — through a brief posting that has circulated among administrators — that the planned Mailbox External Recipient Rate Limit (MERRL, also called the Mailbox External Recipient Rate) is being canceled “indefinitely” after customer feedback, and that Exchange...

Microsoft’s Exchange team has announced a sweeping, tenant-level restriction that will limit outbound email sent from the shared onmicrosoft.com namespace (MOERA — Microsoft Online Email Routing Address) to 100 external recipients per organization per 24‑hour rolling window, and the change comes...