Assigning a task in Outlook sends someone else a to-do item they can accept or decline

When you assign a task in Outlook, you create a to-do item and send it to another person. They receive it in their task list, can see the due date and description you set, and can accept it (which moves it to their own tasks) or decline it (which sends it back to you). The person you assign it to gets a notification, though they do not have to respond right away.

This is different from simply forwarding an email or mentioning something in a message. An assigned task shows up as a formal to-do with a status you can both track. If they accept it, you can see it on your end as delegated. If they decline it, it returns to your task list and you know they said no.

Key Takeaways

  • You create a task first, then assign it to someone by clicking the Assign Task button in the task details.
  • The person you assign it to receives a notification and can accept or decline the task from their own Outlook.
  • Once someone accepts a task you assigned, it moves to their task list and you can track its status as delegated.
  • You can only assign tasks to people in your organization or contacts who use Outlook or Microsoft 365.
  • If you assign a task and then change the due date or details, those changes sync to the other person only if they have not yet accepted it.

How to create and assign a task in Outlook desktop

Open Outlook and go to the Tasks section. You can find this in the left sidebar — click Tasks, or if you do not see it, click the three dots at the bottom of the sidebar and select Tasks from the menu. Once you are in Tasks, click New Task or press Ctrl+N to create a new task.

Type the task title in the Subject field. Add any details in the body of the task — what you need done, context, or instructions. Set a due date by clicking the Due Date field and choosing a calendar date. Then look for the Assign Task button near the top of the task window. Click it, and a field will appear asking you to enter the name or email of the person you want to assign it to. Type their name and select them from the dropdown. Click Send, and the task goes to them as an assignment.

How to assign a task in Outlook on the web

Log into Outlook.com or your organization's Outlook web version. Click the Tasks icon in the left sidebar (it looks like a checkmark in a square). Click New Task to create one.

Fill in the Subject, add details in the Notes section if needed, and set a Due Date. Look for the Assign To field — this is where you enter the email address or name of the person receiving the task. Type their name or email and select them from the suggestions. Once you have entered all the details, click Save. The task will be sent to them as an assignment, and they will see it in their task list with a notification.

What happens after you send an assigned task

The person you assigned the task to receives a notification in Outlook. They can open the task and see the full details — the subject, due date, description, and any attachments you included. They then have the option to Accept or Decline the task. If they accept it, the task moves into their own task list and you will see its status change to Accepted on your end.

If they decline the task, it returns to your task list and you get a notification that they declined it. You can then reassign it to someone else, do it yourself, or follow up with them about why they could not take it on. While a task is pending (waiting for them to accept or decline), you can still edit it, but once they accept it, changes you make will not automatically sync to their copy unless you reassign it.

Tracking the status of assigned tasks

In Outlook desktop, you can see which tasks you have assigned by looking at the task list. Tasks you have delegated to others will show a small icon or label indicating they are assigned. Click on any assigned task to see its current status — whether it is pending acceptance, accepted, or declined.

In Outlook on the web, assigned tasks appear in your task list with a note showing who they are assigned to and what status they are in. You can filter your task view to show only assigned tasks if you have many to track. If someone accepts a task, you can see when they did and monitor their progress if the task has a status field they can update.

Common reasons an assigned task might not go through

If you try to assign a task and it does not send, the most common reason is that the person is not in your contacts or organization directory. Outlook can only assign tasks to people it recognizes — you cannot assign a task to an email address that does not exist in your system. Check that you have spelled their name or email correctly and that they are a valid contact.

Another reason is that the person does not use Outlook or Microsoft 365. Task assignments only work between Outlook users. If someone uses Gmail, Apple Mail, or another email system, they will not receive the task as an assignment — you would need to send them an email instead. Finally, if your organization has restricted task sharing, your admin may have turned off the ability to assign tasks. Contact your IT department if you believe this is the case.

Assigning a task from an email message

You can also create and assign a task directly from an email. Open the email you want to turn into a task, then look for the Follow Up or Flag button. Click it and select Create Task or Add to Tasks. This opens a task creation window with the email subject pre-filled. Add a due date and any notes you need, then click Assign Task and enter the person's name. Send it, and they will receive the task with a link back to the original email.

This method is useful when someone sends you a request and you want to hand it off to a colleague without forwarding the entire email chain. The task includes the context of the original message, so the person receiving it knows what it is about.

Frequently Asked Questions

Can I assign a task to multiple people at once?

No. Outlook only lets you assign a task to one person at a time. If you need multiple people to work on something, you can create separate tasks for each person with the same subject and due date, or you can send them an email and ask them to create their own tasks.

What if someone does not respond to an assigned task?

If they do not accept or decline within a few days, you can send them a reminder email or message asking about it. The task will stay in a pending state on your end until they respond. You can also reassign it to someone else if you need it done by a certain date.

Can I change a task after I have assigned it?

Yes, but only before they accept it. If you edit the task while it is still pending, the changes will sync to their copy. Once they accept the task, it becomes their own copy and changes you make will not affect theirs. If you need to update an accepted task, you will need to send them a message about the change.

Do assigned tasks work with shared calendars or team projects?

Task assignments are one-to-one between you and another person. They do not integrate with shared calendars or team project tools like Microsoft Project or Planner. For team-based work, you may want to use Microsoft Teams or Planner instead, which have built-in task assignment features for groups.

What if I assigned a task by mistake?

If you have not sent it yet, just close the task window without clicking Send. If you have already sent it, you can delete it from your task list, but the other person will still have received it. Send them a message letting them know to disregard it, or you can reassign it back to yourself by declining it on their behalf if your organization allows that.