This project is a decentralized mailing system using Solana for the exchange of public key in the memo field, allowing for shared secret construction and IPFS for message storing. We came up with the idea when we saw that there wasn't any good decentralized messaging system available, and wanted to shoot our shot. The advantage of using IPFS is that any type of message can be send, including images, videos, audio (not implemented at this time). The app can be tested at sol-mailer.xyz, create two new accounts on separate machines, click on new in order to add a new contact, add each other and start chatting.
We hope you liked our idea and the technologies we used in order to come to this end product. Please don't hesitate to contact us if you have any questions related to our project.