Ohio University

iPhone and iPod Touch use built-in ActiveSync to sync email, calendar, and contact data via direct push with Microsoft Exchange. Although Apple has implemented a number of Exchange functions on the iPhone, it has not included all of the features found in Outlook or on Windows Mobile devices. The following is a list of some of the known limitations of iPhone OS 3.0 ActiveSync.

Email

• Only inbox email is "pushed."
  

• Other mail folders will download when clicked (note that this may cause an annoyance for users who have server-side email filters enabled).

• Cannot set out-of-office auto-replies.

• Message flagging is not supported. This means that basic reply and forwarding flags will not sync to the server and you cannot mark messages for follow-up.

Calendaring

• Meeting attendee status is not available.

• Cannot delete a single occurrence of a recurring meeting.

• When responding to meeting invites, there is no option to edit response or not send a response.

• Cannot reply or reply-all to meeting invites.

• Cannot "snooze" meeting alerts.

Other

• Syncing of tasks is not supported.

• Cannot schedule ActiveSync (i.e. disable push) to limit battery consumption.