Depending on your email provider, it might not always be possible to send the files you want to somebody due to the file sizes involved. Wetransfer solves that. The free version allows you to end up to 2GB to whoever you want.
We use 7-zip to zip / extract our files which you need to do before sending them.
There are many many tools you can use for free in order to get a colour scheme for your project. We like to use Coolors to generate from scratch or if you want to make a custom colour scheme from a particular picture, then we use Pictaculous.