Configure storage quotas for a mailbox | Microsoft Learn
You can use the Exchange admin center (EAC) or the Exchange Management Shell to customize the mailbox storage quotas for specific mailboxes. Storage quotas let you control the size
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How to Check Mailbox Size in Microsoft 365
Monitor Exchange Online mailbox sizes across your organization using Microsoft 365 admin center, Exchange admin center, or PowerShell. Identify users approaching storage limits,
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Article
If a message is sent to a distribution list that contains 5,000 or more recipients, the message size can''t exceed 25 MB size limit. If the message size exceeds the limit, the message isn''t delivered, and the
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Exchange Online limits
Find the Exchange Online limits for various service areas, including address book limits, mailbox storage limits, and reporting and message trace limits, to name just a few. Note If you need
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Mailbox Size and Quotas in Exchange 2019/2016 and Microsoft 365
In this article, we''ll show how to get current mailbox sizes and set mailbox quotas for Exchange users. The article is divided into two parts: the first one tells how to configure mailbox size
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M365 Outlook (Information) Exchange Online Limits
The storage quota for the archive mailbox is unlimited for users with an Exchange Online Plan 2 license or for users who have both an Exchange Online Plan 1 and an Exchange Online Archiving license.
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Distribution lists in Office 365
The list is a dynamic distribution list or a security group. For a complete summary of distribution lists which are not eligible for upgrade, visit this Microsoft article.
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list of over quota mailboxes
Here''s a PowerShell script that will output all mailboxes with a quota usage over 80%: Exchange 2013 mailbox quota usage and size report
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Distribution List Limitations and Workarounds
A distribution list is not limited by the number of email addresses contained in it, but by a byte size factor. This technical detail makes it difficult to determine how many contacts can be added to each list.
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