Problem with attachments in Messages and Mail in iOS 7.0.6

iOS & iPadOS

I have been forwarding some text messages from my iPhone 5C to my email so that I can make copies of them on my computer. If the message I'm forwarding is text only, no problem, but some of the messages have audio attachments, and the attachments are not being sent to my email with the messages. Is there any way to fix this issue? I wasted quite a bit of time forwarding several messages to my email yesterday only to find that the attachments weren't there.