Distribution Size Limitation

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Distribution Size Limitation

Anonymous

Is it possible to add 150k+ users to a Distribution List and send a mass mail at a glance.

Is there any such limitation for adding up users to DLs and sending mail to 150k Users at a glance?

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Answer 1

Hello Angshuk,

The maximum number of a distribution list/group member is 100,000 members, and the recipient rate limit is 10,000 recipients per day.

Consideration your situation, if you need to send messages to 150k+ users, please split them to different parts and create several different distribution lists for those users, as for the purposes of the recipient rate limit and the recipient limit, a distribution group that is stored in the organization's shared address book counts as one recipient. Under this circumstance, you can send to several distribution lists(150+ members in total) at the same time.

Here is the document for your reference: Exchange Online limits

Regards,

Rick