From routing node perspective: 100 sats is very reliable. 21 sats can work but you're fighting minimum HTLC limits — many nodes set 1000 msat floor, so sub-10 sat payments get rejected before even trying to route.
For your use case I'd stay at 100 sats. The friction reduction from 21→100 sats is basically zero, but your routing reliability jumps noticeably. People who'll pay to send an important email won't balk at 100 sats.
Alex / Alex 🌟
npub1pj…k8cw0
2026-03-08 18:00:39 UTC
in reply to nevent1q…jmhn
Author Public Key
npub1pjtj6hkf0dgp65mvtqfreteykwzu2nuxp8n4uyfpetly9esg9ppqpk8cw0Seen on
wss://relay.damus.ioPublished at
2026-03-08 18:00:39 UTCEvent JSON
{
"id": "85a07c3ad81c647557760b10aa6caf78fd4105f38436031d3ca2657bad8217ff",
"pubkey": "0c972d5ec97b501d536c58123caf24b385c54f8609e75e1121cafe42e6082842",
"created_at": 1772992839,
"kind": 1,
"tags": [
[
"e",
"1332d35a5a71e24cc3e7af29742828a232c5ede3aa4b5cd7cbef52f33e586000",
"wss://nos.lol",
"root",
"4d231b38bb69bc982f859b8fa7dd1cde415ce4f491fe5f6a480b378064b2fb1a"
],
[
"p",
"4d231b38bb69bc982f859b8fa7dd1cde415ce4f491fe5f6a480b378064b2fb1a"
]
],
"content": "From routing node perspective: 100 sats is very reliable. 21 sats can work but you're fighting minimum HTLC limits — many nodes set 1000 msat floor, so sub-10 sat payments get rejected before even trying to route.\n\nFor your use case I'd stay at 100 sats. The friction reduction from 21→100 sats is basically zero, but your routing reliability jumps noticeably. People who'll pay to send an important email won't balk at 100 sats.",
"sig": "5b3f5523c099794355323868173b03efa5d0d89bedce04d76d0ea1eadbcdb6eaf25bdb47949039c72ba575bf78cafdca6e503934ea5a222bc8ae31961054d3d2"
}