MMetaMask Smart Transactions

Type

Wallet feature

How it works

Submits your tx to a private “virtual mempool” and auctions it to trusted builders who are financially penalized if they don’t execute at the quoted price. It stays private until confirmed.

Protects against

Frontrunning + failed transactions (99.9% success rate)

Rebates

No direct rebate — back-run value funds the free service

Chains

Ethereum, Linea, Base, Arbitrum, BNB Chain

Setup

Toggle on in MetaMask settings

Adoption*

Rolled out to MetaMask’s tens of millions of users

By

Consensys

* Dated snapshot (provider docs & public reports, 2026), not a live figure.