iCloud: Add an attachment to an email
When you use iCloud Mail, you can attach one or more files, such as a photo or a Pages document, to an email message.
Add an attachment
While writing a new email message, click the Attach button at the top of the message window.
Select the files you want to attach, then click the Choose button to begin uploading the files.
To select several adjacent files, click the first one, then Shift-click the last one. To select multiple nonadjacent files, Command-click them on a Mac or Control-click them on a Windows computer.
When the upload is complete, the attached files are listed above the message you’re writing.
To attach more files, repeat steps 1 and 2.
You can also simply drag files into your message. If you use Internet Explorer, see the Apple Support article iCloud: About the iCloud Web App Plugin for Internet Explorer.
Delete an attachment
In the Mail Message window, click the Delete icon next to the attachment’s filename.