Use Workspace Webmail to forward emails as attachments. Workspace packages all of the message contents into a single attachment.
Note: If you want to select multiple email threads, don't open the message. Instead, use the checkboxes in your inbox to select multiple email threads.
Note: If you don't see a More Actions menu, it's likely that you're using the Updated View. Click Classic View in the top right corner, and continue. You can always switch back by clicking on Updated View.