When sending an item:
Click the attachment icon in the bottom bar to select a file to attach.
or
Drag and drop a file in the compose view.
When receiving an item, attachments appear at the bottom of the item with an icon representing what it is. To view the attachment:
Click the attachment icon to see an HTML preview of the item.
NOTE:PowerPoint files will not render if you are using a Linux DVA.
or
Click the download button to download the attachment.
If you receive a message with Mime.822 formatting, you can download the Mime.822 message by doing the following:
Select the mail item in the Mailbox list.
Toggle to display the Preview Pane from the Settings menu if it is not already shown.
Go to Properties > Advanced Properties.
Click the Mime.822 link in the Files section of Advanced Properties.