Your delegate receives an error when trying to send a meeting invitation on your behalf. This stops them from managing your calendar effectively. The problem is caused by incorrect or missing folder-level permissions in Outlook. This article explains how to grant the correct send-on-behalf-of permissions to fix the error.
Key Takeaways: Fixing Delegate Send Permissions
- Folder Permissions > Delegate Name > Permission Level > Editor: Grants full edit rights to your calendar folder, which is required for sending.
- File > Account Settings > Delegate Access > Add: The primary dialog to assign delegate roles and send permissions in Outlook.
- Delegate Permissions > Delegate receives copies > Meeting requests and responses: The critical setting that allows a delegate to send meeting messages.
Why Delegates Get Send Meeting Errors
In Microsoft Outlook, sending a meeting invitation requires two distinct sets of permissions. The first is delegate access, set through the main Delegate Access dialog. This grants a user the right to act on your behalf for tasks like reading mail.
The second required permission is at the folder level, specifically for your Calendar folder. Even with delegate status, if the person lacks Editor permissions on your calendar, they cannot create or send items from it. The send error occurs because the action is blocked at the folder level.
This separation exists because delegate access manages broad mailbox actions, while folder permissions control access to specific data containers. You must configure both correctly for seamless meeting management.
The Role of Send-on-Behalf-of Permissions
When a delegate sends a meeting, the message header shows “Sent on behalf of” followed by your name. This is different from “Send As” permissions, which hide the delegate’s identity. The on-behalf-of permission is automatically configured when you set the delegate to receive copies of meeting-related messages.
Steps to Grant Correct Delegate Permissions
Follow these steps to resolve the send error by configuring both delegate and folder permissions. You must be the mailbox owner to complete these actions.
- Open the Delegate Access Settings
In Outlook, go to File > Account Settings > Delegate Access. Click the Add button to select a new delegate or select an existing delegate’s name and click Permissions. - Set Delegate Permissions for Calendar
In the Delegate Permissions dialog, find the Calendar row. Set the permission level to Editor. This grants the delegate ability to read, create, and modify items. - Enable Meeting Message Delivery
Below the permissions table, ensure the box for “Delegate receives copies of meeting-related messages sent to me” is checked. Then select the option for “Meeting requests and responses”. Click OK to save. - Verify Calendar Folder Permissions
Right-click your primary Calendar folder in the folder pane and select Properties. Go to the Permissions tab. Confirm your delegate is listed with a Permission Level of Editor. If not, add them and set the level. - Test Delegate Send Function
Ask your delegate to try sending a new meeting invitation from your calendar. The error should no longer appear, and recipients will see the message is sent on your behalf.
If the Send Error Persists After Configuration
Delegate Still Cannot Send Meeting After Permissions Are Set
If the error continues, the delegate may need to close and restart Outlook. Permission changes can require a full restart of the client to take effect. Also, verify the delegate is opening your calendar correctly via File > Open & Export > Other User’s Folder.
Error Occurs Only with Specific Recipients
This can indicate a recipient’s mailbox is full or their server is rejecting external meeting messages. Ask the delegate to try sending to a different internal recipient first to isolate the issue. Check for any delivery failure reports in the Sent Items folder.
Permissions Seem to Reset After Outlook Update
A corrupted Outlook profile can cause settings to revert. Create a new Outlook profile via Windows Control Panel > Mail > Show Profiles > Add. Re-add your account and reconfigure the delegate permissions in the new profile.
Delegate Permissions vs Folder Permissions: Key Differences
| Item | Delegate Permissions (Set via Delegate Access) | Folder Permissions (Set via Folder Properties) |
|---|---|---|
| Primary Function | Grants rights to act on behalf of the mailbox owner | Controls access to a specific mailbox folder |
| Required for Sending Meetings | Editor role and meeting copies setting | Editor level on the Calendar folder |
| Configuration Location | File > Account Settings > Delegate Access | Right-click folder > Properties > Permissions |
| Scope of Access | Mailbox-wide tasks like reading and sending | Actions within a single folder like Calendar or Inbox |
| Error if Missing | Cannot open other user’s folder or see tasks | Cannot create or send items from that specific folder |
You can now configure your Outlook delegates to send meeting invitations without errors. Ensure both the delegate access settings and calendar folder permissions are set to Editor. For advanced calendar management, explore using the Scheduling Assistant to let delegates view your availability when creating meetings. Use the keyboard shortcut Ctrl+Shift+Q from your calendar to create a new meeting request quickly.