MailboxConcurrency

geoffrey rannou 1 Reputation point
2025-03-07T11:00:04.8166667+00:00

Hi !

I'm using Graph API to list emails using batching. I'm trying to handle correctly throttling errors of MailboxConcurrency.

I've noticed in my logs some occurences where I'm still getting this error even when I apply a retry of only 1 concurrent call so I'm a little confused.

Is it possible that another application also affects the throttling counter? I can confirm that my application is not sending any other concurrent requests.

Do you have any other idea on how to handle MailboxConcurrency throttling better ?

Thanks in advance

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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