user119689: I wanna send a tiny amount of BTC (0.001BTC). I am not in a hurry and I noticed the mempool is sometimes empty these days because the market is cold. So can I set the network fee to 1sat/byte or even zero?
Will miners add my zero-fee tx to the new block when the mempool is empty?
Thank you.

user48884: Yes, when the mempool is empty, you can set the transaction fee to the minimum relay fee of 1 sat/vbyte. However you cannot make a transaction no fee as there still is the minimum relay fee. The minimum fee is there to prevent people from spamming 0 fee transactions.

119689: <p>I wanna send a tiny amount of BTC (0.001BTC). I am not in a hurry and I noticed the mempool is sometimes empty these days because the market is cold. So can I set the network fee to 1sat/byte or even zero?</p>
<p>Will miners add my zero-fee tx to the new block when the mempool is empty?</p>
<p>Thank you.</p>
 48884: <p>Yes, when the mempool is empty, you can set the transaction fee to the minimum relay fee of 1 sat/vbyte. However you cannot make a transaction no fee as there still is the minimum relay fee. The minimum fee is there to prevent people from spamming 0 fee transactions.</p>
