What is 'Smart Transactions'?
Smart Transactions replaces & expands upon the previously offered Smart Swaps feature in MetaMask Swaps.
MetaMask Smart Transactions explained
MetaMask Smart Transactions is a comprehensive update to the transaction experience. You will now have better insights into the status of your submitted transaction and benefit from a new way to land your transaction on the blockchain that keeps your transactions safe from fails and reverts. Smart Transactions utilize a more efficient process to land on chain, improving the safety and reliability of your transactions.
Smart Transactions means saving money on gas, getting better execution for token swaps, and having peace of mind knowing that transactions are using the most advanced system to be submitted on-chain.