New Outlook: Not Sending Calendar Invites to Attendees

Hi @Michael Pacheco,

Thank you for reaching out. I understand how disruptive it can be when meeting invitations created in the new Outlook for Mac aren’t being sent to attendees.

The behavior you described - where the event appears only on the organizer’s calendar, no message is saved in Sent Items, attendees never receive the invite, and the attendee list disappears when reopening the event - usually indicates that Outlook is saving the item as a personal appointment rather than sending it as a meeting request. In New Outlook for Mac, this can happen if the Save action is triggered instead of Send, or if Outlook’s local data becomes corrupted and fails to send the meeting even when Send is selected.

Here are a few steps to help troubleshoot:

1/ Clear Outlook cache

Corrupted cache can cause New Outlook to mis-handle meeting requests. Please try clearing the Outlook for Mac cache using Microsoft’s Clear the cache in Outlook for Mac guidance.

2/ Confirm the invite is being sent, not only saved

In New Outlook for Mac:

• Clicking Save creates a private appointment and does not send invitations.
• Clicking Send triggers actual meeting delivery.

Even if the user believes they selected Send, it’s important to verify the action in the event window, as this behavior closely matches the symptoms you’re seeing.

3/ Ensure the event is being created on the correct calendar

New Outlook can’t send meeting requests from:

• Local (On My Computer) calendars
• Internet-only calendars (IMAP/Google)

Please confirm the VP is creating the event on a Microsoft 365/Exchange calendar.

If he is using:

• A Group calendar, note that invitations behave differently. Events saved to a group calendar require the group itself to be added as an attendee for invites to be sent.

Reference: Use a Group calendar in Outlook to schedule and edit events - Microsoft Support.

4/ Check attendee resolution before sending

When creating a new event:

• Use Add required people
• Confirm the attendees resolve correctly and remain visible before hitting Send
• Optionally, use Scheduling Assistant to ensure Outlook recognizes the attendees properly

Unresolved attendees may be dropped when the event is saved.

5/ If recipients do receive invites but no Sent item appears

You mentioned conflicting behavior - at one point stating attendees don’t receive the invite, and elsewhere that they do.

If attendees are receiving invites but nothing appears in Sent, this may be due to cloud-based (REST) processing, where the server sends invitations rather than the client. In that case, your IT admin can run a message trace to confirm delivery.

For more detail: Message trace in the new EAC in Exchange Online | Microsoft Learn.

If the issue continues:

Please have your IT administrator open a support ticket in the Microsoft 365 Admin Center so Microsoft can review the calendar backend and New Outlook client logs more deeply.

I hope this guidance is helpful. Please go ahead and try the steps outlined above and let me know how things go. If the issue continues, I’ll be happy to work with you to explore the next steps and find a resolution together.

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Clarification, the users the Send feature

In new Outlook for Mac, a calendar event is only sent as a meeting invite if it is created and saved as an event with attendees and then sent (not just saved as a local appointment). The described behavior—event appears only on the organizer’s calendar, no item in Sent, and attendees disappearing when reopening the event—indicates that the event is being saved as an appointment instead of being sent as a meeting request.

To ensure invites are sent in new Outlook for Mac:

1. From the Calendar, use New Event (or the New Event option from the drop-down next to New Message).
2. In the New Event window:
   • Enter the event name.
   • Add attendees in Add required people (or Invite attendees) and select them from the list.
   • Set date, time, and location.
3. Confirm that this is treated as a meeting (attendees listed, not just a personal appointment).
4. Select Send, not just Save.

If the VP is clicking Save instead of Send, Outlook will create only a calendar entry for the organizer and will not send invitations, so:

• No invite appears in attendees’ inboxes.
• No item appears in the organizer’s Sent folder.
• Attendees may not remain associated with the event when it is reopened.

Compare this with Outlook on the web or legacy Outlook for Mac, where the user is already able to send meeting requests successfully using the standard “New Event/Meeting → add attendees → Send” flow.

If the VP is already using Send and the issue persists across multiple Macs only in new Outlook, the next step is to reset new Outlook’s local state (as shown in a similar case where new Outlook malfunctioned) and then sign in again so the calendar/meeting functionality is rebuilt.

References:

• Create a meeting or appointment in Outlook for Mac
• Event scheduling, room finder, and RSVP in Outlook for Mac
• Schedule a meeting or event in Outlook
• New Outlook has stopped working, Fails when starting after 30 to 60 seconds - Microsoft Q&A