What a shared inbox is and why you'd add one
A shared inbox in Outlook is a mailbox that multiple people can access and manage together. Instead of forwarding emails to each other or copying people on every message, everyone with permission sees the same inbox, reads the same messages, and can respond as the shared account. This is common for team email addresses like support@company.com or info@department.org, where several people need to handle incoming mail without duplicating work.
Adding a shared inbox to your Outlook means you can open it alongside your personal inbox without logging out and back in. You see both in your folder list, and you can switch between them when ready. This matters for organization because you can keep team mail separate from your own, spot which messages have already been answered, and avoid the chaos of "did someone already reply to this?"
Key Takeaways
- A shared inbox appears in your Outlook folder list after you add it, and you can read and send from it without switching accounts.
- Your administrator must grant you permission to the shared mailbox before you can add it — you cannot add one yourself.
- The steps differ slightly between Outlook on the web, Outlook desktop for Windows, and Outlook for Mac, but the principle is the same in each.
- After you add the shared inbox, you can set rules to sort its mail into folders and create a signature that identifies messages sent from the shared account.
How to add a shared inbox in Outlook on the web
Open Outlook in your web browser and sign in with your account. Look at the left sidebar where your folders appear. At the bottom of the folder list, you should see a link that says "Add shared mailbox" or a plus icon next to "Other mailboxes". Click it.
A dialog box will appear asking you to enter the email address of the shared mailbox. Type the full address — for example, support@company.com — and click "Add". Outlook will check whether you have permission. If you do, the shared inbox appears in your folder list within seconds. If you do not, you will see an error message saying access was denied. In that case, contact your administrator and ask them to grant you permission to that mailbox.
Once the shared inbox is added, click on it to open it. You will see all the messages in that account's inbox. To send an email from the shared inbox instead of your personal account, click "New message", compose your email, then look for a "From" field. Click it and select the shared mailbox address from the dropdown. This tells the recipient the message came from the shared account, not from you personally.
How to add a shared inbox in Outlook desktop for Windows
Open Outlook on your computer. Go to the "File" menu at the top left and click "Open & Export", then select "Open Other User's Folder". A dialog box will appear asking for the name or email address of the shared mailbox. Type it in and click "OK".
Outlook will attempt to connect. If you have permission, the shared inbox opens and is added to your folder list on the left side. If access is denied, you will see an error message — this means your administrator has not yet granted you permission. Ask them to add you to the shared mailbox and try again in a few minutes.
After the shared inbox is added, it stays in your folder list. To send a message from the shared account, open a new email, click the "From" button in the message, and select the shared mailbox address. If you do not see a "From" button, go to the "Options" tab in the ribbon and look for "From" there. This ensures your reply appears to come from the team account rather than your personal email.
How to add a shared inbox in Outlook for Mac
Open Outlook on your Mac. Click "Tools" in the menu bar at the top, then select "Accounts". A window will open showing your email accounts. At the bottom of the window, click the plus sign to add an account.
Choose "Other email account" from the options. Enter the email address of the shared mailbox and click "Continue". Outlook will ask for a password — use the same password you use for your own Outlook account, or ask your administrator if the shared mailbox has a separate password. Click "Add Account".
The shared inbox now appears in your folder list on the left. To send a message from it, open a new email and look at the "From" field. Click the dropdown and select the shared mailbox address. Messages sent this way will show the shared account as the sender.
What to do if the shared inbox does not appear
If you enter the correct email address but Outlook says access is denied, your administrator has not yet given you permission. This is the most common reason. Contact your IT department or the person who manages shared mailboxes and provide them with your email address. They will add you to the shared mailbox, which usually takes a few minutes to an hour.
After your administrator confirms you have been added, try adding the shared inbox again. If you still see an error, sign out of Outlook completely, wait a few minutes, and sign back in. Sometimes Outlook needs to refresh your permissions. If the problem persists after that, restart your computer and try once more.
On Outlook on the web, if you do not see an "Add shared mailbox" link at all, scroll down in your folder list to make sure you are looking in the right place. If it is still not there, your version of Outlook may not support this feature — contact your administrator to confirm you are using a supported version.
How to organize mail from a shared inbox
Once the shared inbox is open, you can create folders inside it just as you would in your personal inbox. Right-click on the shared mailbox name and select "New Folder". Name it something clear like "Resolved" or "Waiting for Response". This helps your team track which messages have been handled and which still need attention.
You can also set up rules to sort incoming mail automatically. In Outlook on the web, click the settings gear icon, then "View all Outlook settings", then "Mail" and "Rules". Click "Add new rule" and set conditions — for example, "if the subject contains 'invoice', move to the Invoices folder". This keeps the shared inbox from becoming overwhelming and ensures urgent messages stand out.
Create a signature for the shared mailbox so people know they are hearing from a team, not an individual. In Outlook on the web, go to settings and find "Signatures". Create a new signature that says something like "Support Team — Company Name" and set it to explore only when you send from the shared mailbox address. This prevents confusion about who is responding.
Sending and receiving from a shared inbox
When you receive a message in the shared inbox, anyone else with access can see it when ready. This means you do not need to forward it or tell your teammates about it — they will see it when they check the shared account. If someone else has already replied, you will see their response in the message thread, so you know not to answer again.
When you send a message from the shared inbox, make sure the "From" field shows the shared mailbox address, not your personal email. Recipients will reply to that shared address, and the response will land in the shared inbox where your whole team can see it. If you accidentally send from your personal account, the reply goes to you alone, and your teammates will not know the message was answered.
Some shared inboxes have a setting that lets you see who sent each message — for example, "John replied" instead of just "Support Team replied". Ask your administrator if this is turned on. If it is, you can track who is handling what, which helps prevent duplicate responses and makes it clear who to follow up with if a question needs more detail.
Frequently Asked Questions
Can I add a shared inbox if I do not have administrator rights?
Yes. You do not need administrator rights to add a shared inbox to your Outlook — you only need permission from whoever manages that mailbox. Your administrator grants permission, and then you can add it yourself using the steps above. If you cannot add it, the permission has not been granted yet.
What happens if I delete an email from the shared inbox?
The email is deleted for everyone who has access to that mailbox. It moves to the Deleted Items folder for the shared account, not your personal Deleted Items. Be careful when deleting shared mail, because your teammates cannot recover it unless your administrator restores it from a backup.
Can I send an email that looks like it came from me but goes to the shared inbox?
No. If you send from the shared mailbox address, it appears to come from that address. If you send from your personal email, it appears to come from you. You cannot mix the two. If you want replies to go to the shared inbox, send from the shared address. If you want replies to come to you personally, send from your own account.
Do I need a password to access a shared inbox?
On Outlook on the web and Outlook for Windows, you do not need a separate password — you access the shared inbox using your own account credentials. On Outlook for Mac, you may need to enter a password depending on how your administrator set it up. Ask your IT department if you are unsure.
Can I use a shared inbox on my phone?
Yes, if you use Outlook on your phone. Add the shared mailbox using the same steps as Outlook on the web — go to settings, find the option to add another mailbox, and enter the shared address. The process varies slightly depending on whether you use an iPhone or Android device, so check your phone's Outlook help if you get stuck.