Why does Chime auto-call feature not work for meeting invite sent from shared mailbox?

The auto-call feature in Amazon Chime is not working for meeting invitations sent from a shared Outlook mailbox due to a few potential reasons:

1. Distribution lists: Auto-call doesn't work if the meeting invitation contains a distribution list. When using a shared mailbox, it's possible that the invitation is being sent to or from a distribution list, which would prevent auto-call from functioning properly.

2. Email address requirements: For auto-call to work, you must include individual email addresses of attendees rather than using distribution lists or shared mailboxes. The system needs to be able to identify and call specific attendees.

3. meet@chime.aws inclusion: To use auto-call, you must include 'meet@chime.aws' in the meeting invite. If this address is not included when sending from the shared mailbox, auto-call will not function.

4. Attendee limits: There's a possibility that the number of attendees exceeds the limit for auto-call functionality. Amazon Chime supports a maximum of 250 attendees for meetings scheduled by users with Chime Pro permissions.

5. Shared mailbox limitations: Shared mailboxes may not have the necessary permissions or configurations to properly integrate with Amazon Chime's auto-call feature.

To resolve this issue, try the following:

• Ensure you're using individual email addresses for attendees rather than distribution lists.
• Include 'meet@chime.aws' in the meeting invite.
• Verify that the number of attendees doesn't exceed the limit.
• Consider scheduling the meeting from an individual user account with the appropriate Chime Pro permissions instead of the shared mailbox.

If the problem persists after trying these solutions, you may need to contact Amazon Chime support for further assistance, as there could be specific configuration issues related to using shared mailboxes with Chime.
Sources
Scheduling best practices - Amazon Chime
Meeting size limits - Amazon Chime