Dmail

Inspiration

If giant tech companies like Google went down most of the internet is almost dead, it includes Gmail, Gpay, etc. so, we built a decentralized mail and payment system that works without any need for centralized systems.

What it does

A user can send emails and make payments.

How we built it

To store data in the blockchain is very expensive so we store user's details and emails in IPFS and mapped them to the blockchain by a hash. we write a smart contract for storing those hashes in the blockchain and retrieving mails from the IPFS using the hash. We also include a payment system, we write another smart contract for transferring ether across users, and we have used a chainlink price feed for displaying the transferring ether in USDT to the user. we built all these in a rinkeby testnet. finally, we built a cool website with all these functionalities in react.js.

Challenges we ran into

The main challenges we run into are, retrieving mails to the user from the IPFS, and building a good looking website.

Accomplishments that we're proud of

We are very proud to build one of the first dapp which includes both decentralized mailing and payment systems.

What we learned

We have learned a lot of new technologies.

We have learned a Solidity programming language.
React.js mainly hooks, routers, and styling.
Blockchain technologies like IPFS for storing data in a decentralized way, and Chainlink price feeds for retrieving the most recent crypto prices.
Libraries like ethers.js.
Hardhat framework for testing and deploying smart contracts.
Full-stack blockchain development workflow.