Testing is not mandatory on Mintplex, but should you launch directly to a mainnet and have trouble with your contract or find you did not include a feature - we cannot help you.
Please always deploy to a testnet before deploying to mainnet to ensure every function works.
Testnets are replicas of a blockchain that allow you to use a fake currency to experiment and test smart contracts.
All networks have a testnet and Mintplex interfaces with all of them!
Testnets of each network are listed below:
Ethereum - Rinkeby
Polygon - Mumbai
Optimism - Kovan
Note: These faucets are not always operational. If you need a testing currency on a network just ask in the Discord or @Mintplexnft on Twitter.
Deploying on a testnet
To deploy on a testnet you must first generate a contract. After which you can move to deploy on a testnet. The video below will outline how to deploy on a testnet!