CF7 Drop Uploader WordPress plugin allows you to add powerful Drag & Drop File Uploading area to your Form, that was built with Contact Form 7. You can add several file uploading areas for one form, set maximum files amount for each field, maximum file size and file type for each of them. You can send uploaded files as mail attachments, links to Dropbox or upload them to your server and send links to them. Also, Drop Uploader supports javascript file validation, so it can handle errors before the file was uploaded.