Currently, Mozilla sends attachments in AppleDouble format. AppleDouble sometimes causes problems for recipients. Mozilla should allow users to turn off appledouble encoding for outgoing attachments and just send files as regular MIME body parts with no resource fork. This is how Communicator 4.x behaves.

Mozilla could skip appledouble encoding when the file to be attached has no resource fork. Or this could be a preference, e.g. o always use appledouble o use appledouble when attaching files that have resource forks o never use appledouble

Bug 937 suggests that Internet Config can be used to determine whether a file's resource fork needs to be preserved (and therefore whether appledouble encoding is necessary)

This request no longer applies; Mozilla doesn't use AppleDouble on files that don't have resource forks.

verified per reporter's comments.