How to find sender of an attached email with ews

Question

In EWS, the EmailMessage has a sender (emailMessage.getSender()) and may has attachments (emailMessage.getAttachments()).

These attachments can be FileAttachment (for files) or ItemAttachment (for attached email).

There is a lot of information on this item attachment such as :

• To : ((ItemAttachment) attachment).getItem().getDisplayTo();
• Subject : ((ItemAttachment) attachment).getItem().getSubject();
• see http://msdn.microsoft.com/en-us/library/exchange/aa580790(v=exchg.140).aspx

But how to find the sender of this attached email ?

Edit : Using EWS Java API 1.1.5 http://archive.msdn.microsoft.com/ewsjavaapi/Release/ProjectReleases.aspx?ReleaseId=5754

Answer 1

Following the SliverNinja response, I tried to retrieve the item as an email message. Using EWS with Java, you have to cast the item ItemAttachment as EmailMessage like this:

Item item = ((ItemAttachment) attachment).getItem();
if (item instanceof EmailMessage) {
    String sender = ((EmailMessage)item).getSender().getAddress();
}

The item can also be cast as Appointment or Contact or Task or ContactGroup.

Edit : Another way to get the sender is

((EmailMessage) item).getFrom().getAddress();

This looks like to do the same