An attachment was sent via email, even though my group is set to store attachments online
In the event that Yahoo! Groups is having problems storing the file, it will be sent via email to prevent it from being lost.
If you received an email with an attachment even though your group is set to store attachments online, this is likely the cause, and the issue should correct itself soon. If you continue to receive attachments via email, please contact Customer Care to report it.