Limit on generating emails via Microsoft Graph

Question

Hello.

We are developing a solution that collects users emails (users are employees of the our client company) from Outlook and, based on these emails, calculates metrics, determines user burnout, etc. We are trying to create a test stand for load testing. by generating emails for test users. We use methods https://learn.microsoft.com/en-us/graph/api/user-post-messages?view=graph-rest-1.0&tabs=http and https://learn.microsoft.com/en-us/graph/api/user-sendmail ?view=graph-rest-1.0&tabs=http.
But we have a problem: we receive emails from Microsoft that it is impossible to send more than 10,000 mails per day from one mailbox. How to get around this limitation? It prevents generating data for the test stand

Answer 1

Hi @Kate ,

Looks like you are hitting the limit of 10,000 messages within 24 hours, refer to exchange-online-limits.

After the recipient rate limit is reached, messages can't be sent from the mailbox until the number of recipients that were sent messages in the past 24 hours drops below the limit.

Hope this helps.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have further questions about this answer, please click "Comment".