What an email group is and why you might need one
An email group in Outlook is a saved list of email addresses under a single name. Instead of typing five or ten addresses every time you want to send the same message to the same people, you type the group name once. Outlook expands it to all the addresses when you send.
You might create a group for a book club, a project team at work, a neighborhood watch list, or family members you email together regularly. The group lives in your Outlook contacts, and only you can see or edit it — it is not a shared inbox or a mailing list that other people manage.
Outlook calls this a "distribution list" on the desktop version and a "group" on the web and mobile versions. The function is the same: one name, many addresses, sent from your own account.
Key Takeaways
- Create a group by opening Outlook contacts, selecting "New Group" or "New Distribution List", and adding the email addresses you want to include.
- You can add addresses one at a time, paste multiple addresses at once, or select existing contacts from your address book.
- Once saved, type the group name in the "To" field of any email, and Outlook will expand it to all member addresses when you send.
- You can edit the group later to add or remove addresses, but changes only affect emails you send going forward.
- Groups you create are stored locally on your device (desktop) or in your Outlook account (web and mobile), not on a shared server.
Creating a group in Outlook on Windows or Mac
Open Outlook and go to the People tab (or Contacts tab on older versions). At the top of the window, look for a button labeled "New Group" or "New Distribution List". Click it.
A dialog box will open asking for a group name. Type something clear — "Book Club", "Q4 Project Team", "Family". Avoid names that are too similar to individual contact names, because Outlook will suggest both when you type in the "To" field later.
Below the name field, you will see an "Add Members" or "Members" section. Click the button to add addresses. You can type an email address directly, paste multiple addresses separated by semicolons or line breaks, or click "Add from Contacts" to select people already in your address book. Repeat until all addresses are in the list, then click "Save" or "OK".
Creating a group in Outlook on the web
Sign into Outlook.com or your work Outlook account in a browser. Click the People icon on the left sidebar (it looks like a person's head and shoulders). At the top, click "New Group" or the plus sign next to "Groups".
Type the group name and a description (optional). Under "Add Members", start typing a name or email address. Outlook will show matching contacts from your address book. Click each person you want to add. You can also paste email addresses directly into the field.
Once all members are added, click "Create" at the bottom. The group is now saved to your Outlook account and will appear in your People list.
Adding and removing addresses after you create the group
To edit a group you have already created, open your Outlook contacts and find the group name in the list. Double-click it (or right-click and select "Edit" on the web version).
The group will open in edit mode. To add a new address, click "Add Members" or the plus icon and type or paste the address. To remove someone, click their name in the list and press Delete or click the X next to their name. Click "Save" when you are done.
Changes to the group take effect when ready, but only for emails you send after the edit. If you sent an email to the group yesterday, that email went to the old member list — you cannot retroactively change who received it.
Using the group to send an email
Open a new email in Outlook. In the "To" field, start typing the group name. Outlook will show the group as a suggestion. Click it to select it, or finish typing the full name and press Enter or Tab.
The group name will appear in the "To" field. When you send the email, Outlook expands the group name to all member addresses behind the scenes — recipients see the individual addresses, not the group name, unless you put the group in the "Cc" or "Bcc" field.
If you put the group in "Bcc", all recipients receive the email but cannot see the other recipients' addresses. This is useful for privacy when emailing a large group of people who do not know each other.
Limits and things that can go wrong
Groups you create in Outlook are personal — they sync to your account, but you cannot share the group itself with another person. If a coworker needs the same list, they have to create their own group with the same addresses.
If someone's email address changes and they do not tell you, emails to the group will bounce for that person. You will usually see a delivery failure notice, but not always if the address is straightforward inactive. Check your group list occasionally and remove addresses that are no longer in use.
On the desktop version, if you delete a group by mistake, you may be able to undo it when ready with Ctrl+Z. On the web version, deleted groups cannot be recovered, so double-check before you delete.
When a group is not the right tool
If you need a shared inbox that multiple people can send from and manage together, a group is not the answer — you need a shared mailbox or a Microsoft 365 group (which is different from a personal distribution list). If you need a mailing list that people can subscribe to and unsubscribe from themselves, you need a service like Mailchimp or a Microsoft 365 group with public membership.
A personal group in Outlook works best when the list is stable, you are the only one managing it, and you send to the same set of people regularly. For temporary projects or large public lists, other tools are usually simpler.
Frequently Asked Questions
Can people see who else is in the group when I send an email to it?
Only if you put the group in the "To" or "Cc" field. If you use "Bcc", recipients see only their own address and yours. Most people use "Bcc" for groups of people who do not know each other, and "To" or "Cc" for teams or groups where everyone knows they are part of the same list.
What happens if I add someone to a group after I have already sent an email to it?
The new person will not receive that old email. They will only receive emails you send to the group after you add them. If you need to include them in a conversation that already happened, you have to forward the old email to them separately.
Can I create a group that includes another group?
On the desktop version, yes — you can add a group name to another group, and Outlook will expand both when you send. On the web version, this is not supported. If you need nested groups, the desktop version is your only option.
Do I need a Microsoft 365 subscription to create a group?
No. Personal distribution lists work in the free Outlook.com version and in any Outlook desktop installation. Microsoft 365 groups (which are different) require a subscription, but basic email groups do not.
If I use the same group at work and at home, will it sync between my work and personal Outlook accounts?
No. Groups are stored separately in each account. If you need the same group in both places, you have to create it twice or manually add the addresses to both accounts.