TransferNow - mail later...
TransferNow is a simple and very useful client-server application for downloading files from your Mac to your iPhone over Bluetooth® or WIFI while on a local network. You can e-mail those files as attachments if your computer does not have access to Internet (and your phone most likely does) or later on when you are away from your computer. You can print them anywhere from your phone. Or you can simply use your phone as temporary backup storage for important files.
To use this App you would need to install server part - TransferNowM- on your computer ( available for free in Mac App Store ).