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.
Start signed client projects with a welcome and first steps.
Your new client gets a personal welcome after signing, with clear first steps and a link to share files.
Hold client handoffs until revised proposals have a fresh review.
Your delivery manager sees changed proposal terms and a pending review before the team moves forward.