You can upload all your documents pertaining to the lead in one place? What a great way to organize and manage all the information you have. Upload documents, emails, quotes, proposals, and more on the lead page.
In your dashboard, go to a lead. Scroll to the attachment section and click on 'New Attachment,' Upload, and Add. You can find all the attachments added to this lead in one convenient spot.

Fig 1. Upload attachments