Crossword clues for Mail drop. 4 lettersAnswerClueSLOTMail drop, e.g.APOSG.I. mail dropsAPOSGI's mail dropsAPOSMil. mail dropsSLOTMail drop.SLOTMail-drop openingSENDDrop in a mail slotSENDDrop into a mail slotSENDDrop in the mailSENTDropped in the mailPOSTDrop in the mailSTOOPMail drop off, for the lazy postmanAPOMil. mail dropAPOGI's mail dropARMYPOSTOFFICEMilitary mail dropAPOMilitary mail drop: Abbr.SLOTSMail dropsCHUTEMail dropSPYMail-drop userAPOSgt.'s mail dropAPOService mail drop: Abbr.APOPFC's mail dropSLOTSMail drop openingsAPOBase mail dropAPOGI mail dropGPOMail drop-off locale: Abbr.POBMail drop-off place, sometimes: Abbr.SENTOFFDropped in the mailSENDSDrops in the mailSENDOUTDrop in the mailPOSTSDrops in the mail boxSENTOFFDropped into the mail