When you create an Ethereum transaction, Fordefi provides you the option of protection from MEV profiting (on the ethereum_mainnet chain only).
"Maximal extractable value (MEV) refers to the maximum value that can be extracted from block production in excess of the standard block reward and gas fees by including, excluding, and changing the order of transactions in a block."
ethereum.org.
Learn more here, here and here.
Using MEV protection, your transaction will not be published to the public mempool. Instead, it will be relayed to a “private” mempool, where it will be bundled and auctioned, ensuring protection from searchers picking your transaction from the public mempool and front-running it.
Currently, Fordefi achieves this by sending the transaction to the “Flashbots Protect” RPC.
If you choose to use MEV protection, Fordefi recommends setting the gas fee as “high” to ensure the transaction is bundled.
Avoid using MEV protection for small amounts as they are likely to be ignored by block builders in the private mempool and drop.
Besides value, the transaction's
maxPriorityFeeis an important factor that will decide if and how quickly a transaction will be included into a MEV-protected block. ThemaxPriorityFeecan be customized in the web app and Fordefi extension when creating the transaction and it's recommended to bid above market. When setting a fee for an Ethereum Mainnet transaction, make sure thatmaxProrityFee<=maxTotalFee.Fordefi does not allow broadcasting a transaction with MEV Protection enabled while a transaction without MEV Protection is still pending and has not reached a completed state.