I didn't really change the setting when I'm making a transaction but I want the cheapest fee with a reasonable transaction time how low can I go with the fees without getting an issue or getting a failed transaction? Thanks
This is the usual setting that I'm using for optimal fee rate:
- Click the settings icon (upper-right side of the screenshot) and tick "Edit fees manually".
- Set the slider into "Mempool".
- Slide it through "1.00 MB from tip".
- Edit the 'absolute fee' (editable value at the right side of mining fee) into slightly higher than the automatically set value.
- Create the transaction.
That setting ensures that your transaction when broadcasted will be within the size of the currently being mined block.
The downside of this compared to ETA is, it's relying on a single factor (
server mempool's size).
So if mempools grow in size right after your transaction is broadcasted, it will be out of the <1mb from tip range.
Also, it's expensive at the moment.
Alternatively, this is the "
slow-confirmation" setting that I'm using to make sure that it won't get dropped:
- Tick "Edit fees manually" like in the instructions above (only if it's disabled).
- Go to https://mempool.space/ and take note of the "Purging" fee rate.
- Back to Electrum, edit the 'fee rate' (editable value at the left side of mining fee) into something relatively higher than the "Purging" fee rate.
- Create the transaction.
Since mempool is unpredictable, it's up to you if you want to set it 1~10sat/vB higher than the bottom of the mempools.