[ Thanks to Morten W.
Petersen for this link. ]
“Once in a while, you may need to attach a file to your email
message. Part 4 will mainly evolve around editing attachments and
what buttons you got on the hotbar in the address book. By now you
should be able to navigate fairly well in the Thunderbird user
interface, so I’m going to give a few more pointers in this part
than the previous“The first thing you need to do is open a new message.
Having done that, you need to press the attachment button, right
next to the attachment button is there also an arrow; you’ve got 2
choices, either attach a file or a web address. Click on the
attachment button, and a window for browsing your folders will
appear for your hard drive…”