You depend on electronic communication every day. You utilize it to send the files and information that shape your life and business. Once your emailed files are sent, however, how do you maintain control of your content and restrict unauthorized copying and forwarding? How do you prevent secondhand tampering and ensure the integrity of the original message? There is an intense global need to send confidential information online in a simple yet familiar way that provides the sender complete control over a secure, blockchain-audited record of interactions. Envilope provides this service with the world’s first blockchain-based postal service. Envilope is a virtual envelope in which you can lock emails, digital files, or secure messages containing text, images, audio, video - anything that can be sent online. Envilope gives senders unprecedented privacy and control over their content, including who views it, when, and where. Only the intended recipient can open an Envilope, and only after accepting the sender’s terms and conditions. If you ever suspect a breach, you can entirely vaporize your content at will, regardless of how many times it has been shared or forwarded. You lso have the ability to fully restore that vaporized content should you see fit. The sender of an Envilope is in total control of their information from end-to-end.