Re: Emails deleting themselves when iPhone Sync occurs

Hi Slevy,

Thank you for your post.

Did this issue occur if your users using Outlook client or Outlook Web App to receive and read emails?

You can check the transport rules for emails by referring to the link below:

Actions for Transport Rules

Regarding to your request about contact Microsoft for support, the Service Request and Phone Call for technical issue are supported for Office 365 for Enterprise users currently. 
1.To submit a Service Request, please refer Contact Support for a technical issue

2.To find a phone number for your country or region, sign in to Office 365. On the Admin Overview page, on the left pane, under Support, click Overview.

If you are an user of Office 365 for Professional and Small Business, you can get support in this community forum for this issue.

Thanks,
Jolin Qiao