From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.0+) Gecko/20020531 BuildID: 2002053104 When composing a mail and chosing File->Attach File... or clicking on the Attach icon, the dialog should allow to select multiple files which are to be attached. Currently only Drag'n'Drop from Explorer allows to add multiple files at once. That's a somewhat good workaround, however the best solution IMO would be to select multiple files in the file select box.
*** This bug has been marked as a duplicate of 43015 ***
marking verified as a duplicate