Beginning in August 2023, managing distribution groups will no longer be possible from Outlook on the web. Administrators should manage their organization’s distribution groups in the Exchange admin center. Non-administrators who want to manage or join distribution groups can do so by navigating to this portal.
Note:If you use Outlook on the web, Microsoft 365 Groups are available to you. Microsoft 365 Groups are similar to distribution groups in that they allow you to communicate with multiple people in one email message, but they also come with a shared mailbox, calendar, document library, notebook, and more. For more details, seeLearn about Microsoft 365 Groups.
In this article:
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Join or leave a distribution group
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Create and manage distribution groups
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Control who can send to a distribution group
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Set up a moderated distribution group
Join or leave a distribution group
Use Join or leave a distribution group to see and manage the distribution groups you’re a member of.
To join a distribution group:
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Navigate to this portal,select theGroupstab on the left panel and select Groups I belong to.
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Select Join
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In the dialog box, select the group you want to join. You can search for a group by typing all or part of its name in the search window, and then selecting the search icon
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Select the group you want to join.
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Select Join
To leave a distribution group:
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Navigate to this portal,select theGroupstab on the left paneland select Groups I belong to.
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Select the distribution group you want to leave.
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Select Leave
Create and manage distribution groups
Create and manage distribution groups shows the distribution groups that you’re listed as an owner of. Use it to create new groups and manage existing groups that you own.
To create a new group:
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Navigate to this portal,select the Groupstab on the left paneland selectGroups I own.
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Select AddNew Group
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In the dialog box, follow the steps to add the information needed to create your distribution group.
To edit a group or review information about a group:
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Navigate to this portal, select theGroupstab on the left paneland selectGroups I own.
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In the dialog box, select the group you want to edit. You can search for a group by typing all or part of its name in the search window, and then selecting the search icon
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Select Edit general settingsor go to the Settingstab.
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Make the changes you want.
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Select Save to save your changes, or Cancel to leave without saving.
To delete a group that you own, find it in the list and select Delete 
Control who can send to a distribution group
After you’ve created a group, you can edit it to control who can send messages to it. By default, only people inside your organization can send to distribution groups in your organization’s address book.
To determine who can send to your group:
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Navigate to this portal, select the Groupstab on the left paneland selectGroups I own.
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Select the distribution group that you want to change the settings for.
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Select Settings.
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Select Edit delivery management.
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Choose the delivery management settings.
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Select Save to save your changes, or Cancel to leave without saving.
Set up a moderated distribution group
Messages sent to a moderated distribution group can be screened by a group moderator before being sent to all members of the group. If you own a group, you can set up moderation rules for the group.
To configure a moderated distribution group:
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Navigate to this portal, select the Groupstab on the left panel and selectGroups I own.
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Select the distribution group that you want to make a moderated group.
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Select Settings.
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Select Edit message approval.
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Choose the message approval settings you want and add group moderators.
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Select Save to save your changes, or Cancel to leave without saving.
