user135945: What is the simplest way to send bitcoin without fee (fee=0)? It seems that many wallets (including Bitcoin Core 24.0.1) do not permit users to set 0 fee for a transaction.

user5406: Full nodes do not propagate transactions that offer less than the minimum relay transaction fee. By default, this setting is 1 sat/vB. If you were to create a transaction with a lower feerate and submitted it on the open network, it would probably not reach the miners.
You would need to convince a miner that they should include your transaction and give it to them directly. This is extra work for the miner and you're not providing any monetary incentive as the fees are set to zero. There is little reason for a miner to acquiesce to such a request.
The simplest way would probably be to try and build a public movement that convinces one or multiple miners that they should generally set their minimum feerate to zero. People have tried that a few times already, it does not seem to have a lot of support.
To build a transaction with zero fee, you would first configure your own node to permit a feerate of zero (to allow your own node to propagate it). I don't think your wallet will ever build a zero-fee transaction, so you'd probably have to build it manually with createrawtransaction. There may be other libraries that make this easier, but I'm not sure anyone has bothered because such transactions are usually not processed by miners today.

135945: <p>What is the simplest way to send bitcoin without fee (fee=0)? It seems that many wallets (including Bitcoin Core 24.0.1) do not permit users to set 0 fee for a transaction.</p>
 5406: <p>Full nodes do not propagate transactions that offer less than the minimum relay transaction fee. By default, this setting is 1 sat/vB. If you were to create a transaction with a lower feerate and submitted it on the open network, it would probably not reach the miners.</p>
<p>You would need to convince a miner that they should include your transaction and give it to them directly. This is extra work for the miner and you're not providing any monetary incentive as the fees are set to zero. There is little reason for a miner to acquiesce to such a request.</p>
<p>The simplest way would probably be to try and build a public movement that convinces one or multiple miners that they should generally set their minimum feerate to zero. People have tried that a few times already, it does not seem to have a lot of support.</p>
<p>To build a transaction with zero fee, you would first configure your own node to permit a feerate of zero (to allow your own node to propagate it). I don't think your wallet will ever build a zero-fee transaction, so you'd probably have to build it manually with <code>createrawtransaction</code>. There may be other libraries that make this easier, but I'm not sure anyone has bothered because such transactions are usually not processed by miners today.</p>
