Quote from: corel on Today at 08:21:40 AM

How to send 0.0000004 BTC?

Tell me please if there are any services that allow sending such small amounts?

If bitcoin price is $109000, that is around $0.0436. That is too small but you can make use of your wallet to send it. Set the fee to 1 sat/vbyte. The mempool is not congested, it will be confirmed.

Quote from: OmegaStarScream on Today at 08:24:15 AM

40 satoshi? I'd use the lightning network for that. But then if you don't already have them in the lightning network, you would need to pay more to convert them to LN.

1 input and 2 outputs on bitcoin noncustodial wallet in a transaction will not take more than $0.16. If he is patient and ready to learn, he can go less than 1 sat/vbyte using the guide below.

How to make a bitcoin transaction and pay less than 1 sat/vByte