What an email group is and why you'd use one

An email group in Outlook is a saved list of email addresses under a single name. When you send a message to the group, everyone on that list receives it. You create groups to avoid typing the same addresses repeatedly — for a book club, a project team, a family chain, or any set of people you email together regularly.

Outlook calls this feature a distribution list on desktop and a group on the web and mobile. The steps differ slightly depending which version you use, but the end result is the same: one name that expands to multiple addresses when you type it in the "To" field.

Groups live in your Contacts. Once you create one, it stays there until you delete it, and you can edit it anytime to add or remove people.

Key Takeaways

  • Desktop Outlook uses the Contacts folder and the "New Contact Group" button to create a distribution list; web Outlook uses the People app and a "New Group" option.
  • You add members by typing their email addresses one at a time or pasting a list, and you can include both individual contacts and other groups.
  • Once created, a group appears in your address book and autocompletes when you type its name in the "To" field of a new message.
  • You can edit a group anytime to add or remove members, and deleting a group removes only the list itself, not the contacts inside it.

Creating a group in Outlook on the desktop

Open Outlook and go to the People tab at the bottom of the window (or press Ctrl+3). In the ribbon at the top, click New Contact Group. A new window opens with a blank group form.

Type a name for your group in the field at the top — something like "Book Club" or "Q4 Project Team". This is the name you'll type when you want to send to everyone at once. Below that, click Add Members, then choose Add from Outlook Contacts or Add from Directory depending on where the person's address is stored.

A dialog box appears. Type or search for each person's name, click their entry to select it, then click Add. Repeat for each member. When you're done adding people, click OK to close the dialog, then click Save & Close on the group form. Your group is now saved in Contacts.

Creating a group in Outlook on the web

Log into Outlook.com or your work Outlook account in a browser. Click the People icon (it looks like a person's silhouette) in the left sidebar. At the top of the page, click New Group.

A form appears. Type your group name, then add a description if you want one — this is optional and only you see it. Click Add Members. Type or search for each person's name, click their entry, and click Add. Repeat until your group is complete.

When you're done, click Create. The group is saved and appears in your People list. You can now type its name in the "To" field of any new message, and it will autocomplete.

Adding members after you create the group

You don't have to add everyone at once. To edit a group later, open your Contacts (People tab on desktop, or People icon on web), find the group name, and click it to open it.

On desktop, click Add Members again and follow the same steps. On the web, click Edit Group (or the pencil icon), then click Add Members. To remove someone, find their name in the group and click the X or delete button next to it, then save your changes.

Using your group to send a message

Open a new email in Outlook. In the "To" field, start typing your group's name. Outlook shows it in the dropdown — click it to add the whole group at once. The group name appears in the "To" field, and when you send, everyone on the list receives the message.

The recipients see the message as addressed to the group name, not to each individual address. If you want people to see each other's addresses, you'll need to use a different tool — Outlook groups don't show the full member list to recipients by default.

Differences between groups and forwarding lists

A group is not the same as forwarding a message to multiple people. When you send to a group, everyone receives the original message at the same time. If you forward a message, you're sending a copy of something that already exists, and the chain can get confusing.

Groups are also different from shared mailboxes or team channels. A group is just a contact list — it doesn't create a shared inbox or a permanent conversation thread. If you need people to collaborate in a shared space, you'd use Microsoft Teams or a shared mailbox instead.

Troubleshooting groups that don't work

If you type a group name and it doesn't autocomplete, the group may not be saved yet. Close and reopen Outlook, or refresh your browser if you're using web Outlook. If it still doesn't appear, open Contacts and check that the group is there.

If you get a delivery failure when you send to a group, one or more addresses in the list may be wrong or outdated. Open the group, check each address, and remove or correct any that look incorrect. If someone's address has changed, update it in your Contacts first, then the group will use the new address automatically.

On work accounts, your administrator may restrict who can create groups or how large they can be. If you can't create a group or can't add certain people, contact your IT department to ask what the limits are.

Frequently Asked Questions

Can I put a group inside another group?

Yes. When you add members to a group, you can select another group instead of just individual contacts. This is useful if you have overlapping teams — for example, a "Leadership" group and a "Company All-Hands" group that includes Leadership plus others.

What happens to the group if I delete a contact?

The contact is removed from all your groups automatically. If you delete the contact by mistake, you can undo it right away with Ctrl+Z, or you can add the address back to the group manually later.

Can people outside my organization join a group I create?

On personal Outlook accounts, yes — you can add any email address. On work accounts, it depends on your organization's settings. Some allow external addresses, others don't. If you can't add someone's address, try typing it manually instead of searching for it.

Do group members know they're in a group?

No. Group membership is private to you. When someone receives a message sent to a group, they see the group name in the "To" field, but they don't get a list of who else is in it unless you tell them or they reply-all and see the other addresses.