Currently Being ModeratedMay 20, 2013 7:48 AM (in response to Oawinje)
I use the Office2HD app to attach my Dropbox files to email rather than sending a Dropbox link.
You can link Office2HD to your Dropbox account. Then within Office2HD you navigate to your file. Click on the ">" button next to your file listing and select "Email File." This attaches the file (not a link) to a new email message. I haven't found a way to attach multiple files though…
I don't think you are not going to find the attachment option available within the iOS Mail app due to "sandboxing." IOS apps are all "sandboxed" to prohibit access to their data from other apps. Apple would have to build Dropbox into iOS and have the iOS Mail app tightly integrated with it to allow attachments like you're used to on an OS X computer (the file structure in iOS is very different from OS X). The attachments in iOS Mail must occur from the third party app (like Office2HD) rather than from Mail. I'm not sure why the Dropbox app doesn't offer the option to attach a file like Office2HD does…
Hope this helps!