A queue-ban minden levél egy számmal van jelölve. A példában legyen ez a 457.
mess/457: the message
todo/457: the envelope: where the message came from, where it's going
intd/457: the envelope, under construction by qmail-queue
info/457: the envelope sender address, after preprocessing
local/457: local envelope recipient addresses, after preprocessing
remote/457: remote envelope recipient addresses, after preprocessing
bounce/457: permanent delivery errorA levél lehetséges állapotai. + jelöli, ha a file létezik, - ha nem, ? ha vagy létezik, vagy nem.
S1. -mess -intd -todo -info -local -remote -bounce
S2. +mess -intd -todo -info -local -remote -bounce
S3. +mess +intd -todo -info -local -remote -bounce
S4. +mess ?intd +todo ?info ?local ?remote -bounce (queued)
S5. +mess -intd -todo +info ?local ?remote ?bounce (preprocessed)A queue inode szervezésű, tehát a levelet jelölő szám az adott file inode-ja is egyben.