6/25/2025 Important update regarding the cloud hosted Mailbox External Recipient Rate Limit: In order to reduce the impact on customers, Microsoft has again decided to delay the rollout of the cloud ...
Updated Jun 25, 2025
Version 14.0
Blog Post
The_Exchange_Team\ Right POC within MS - Could you please confirm if this limit also impacts emails sent using Graph API\EWS. Or is it only limited to Outlook\OWA clients and the SMTP Auth Submission??
IanMcDonald, The_Exchange_Team - Could you kindly update me regarding the various protocols that might be impacted with this change?
Its mailbox dependent not protocol dependent from what I'm gathering on the posting, so sending an email from graph or EWS is still going to count against the quota I think. Probably still good to clarify but I'm fairly certain it will count.
