Deleting mail

sithbit mail delete <message_id> [to_address] \
  [--keypair <keypair>] \
  [--skip-preflight]

to_address defaults to your own address (the recipient). For example:

sithbit mail delete 3

Note: deleting a message is also the settlement trigger — it’s when postage is actually paid out to the recipient and domain operator. See Economics for the exact split. Deleting also reclaims the message account’s rent, on top of settling postage.