select the mails and click forward as attachment from the right click menu.

Thanks Matt. I had previously found the "forward as attachment" feature but it seems to require you to start all over with a new blank e-mail with the attachments. It doesn't allow one to attach other e-mails to a forward or reply of your current string. I guess that I could copy the current string and put it into the "forward as attachment" new blank e-mail but that seems cumbersome. I was hoping for a way to "copy" and "paste" e-mails. The menu allows "copy to" but seems to limit the "to" to e-mail folders only. Any other possibilities?

You can drag-and-drop files onto an email message in the Compose window in order to attach them, but unlike Outlook, you drop them onto the addressing region above the message window, not into the message text.

You can also forward email messages this way too.

If you want to quote text from other messages, just use the regular select, copy and paste actions, using your mouse and right-click, or the standard ctrl+c/x/v keystrokes.

@Zenos, I have a quote icon on my compose toolbar. I think it was hidden away in customize, at least I think that ios where it came from. But it inserts into the current composition the text of the last email I viewed in the same format as if I had hit the reply button. View another email, click the button and get another quote.

Can you confirm this is not something I have picked up from an add-on?