Having uploaded the Jpeg, Gif or Zip into the message's Attachments box, I prefer to COPY / PASTE this line into the message text where I want the attachment shown, deleting the file name from the Attachments box as soon as that is done!
This will avoid what you can see below, Attachment links not in places where they ought to be and when clicked on create a new window, one has to take care not to "Close" using the Back Arrow instead!
Also remember that FIREWALLS need to be shut down before attempting to Upload, not liked by the Uploader!