Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Send new project clients their first steps and shared folder link.
Your new client gets a personal welcome after signing, with clear first steps and a link to share files.
Hold delivery until changes to a reviewed proposal get checked.
Your delivery manager sees changed proposal terms and a pending review before the team moves forward.