It is not clear to me the exact number of mails I can send through the Microsoft Graph API

Question

Hello, My question is the following:

What exactly is the daily limit of emails I can send through Microsoft Graph api?

I know that the limit of request per 10 minutes is 10000 messages. But I need to know the daily mails limit.

Currently I have an application with a service that has a maximum limit of 10000 emails per day. I would like to know if Microsoft Graph exceeds this limit.

Thanks!

Answer 1

Hello Gabriel Salvador Quiroga,

Thank you for reaching out to Microsoft Support!

According to the document, the limit for each application and mailbox combination is 10,000 requests per 10 minutes, and this limit does not affect the application's access to another mailbox, there is no limit on the number of requests per day, so only need to meet the number of 10,000 requests per 10 minutes, can always send requests.

For sending emails, the most important limits are Exchange Online limits, which limit that each mailbox can send 10,000 emails every 24 hours, after the number reaches the limit, no mail can be sent, even using the Graph API. For details, please refer to the following document:

https://learn.microsoft.com/en-us/graph/throttling-limits#outlook-service-limits

https://learn.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits#sending-limits-1

Hope this helps.

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