Crossword clues for Some encs.:ENCStuffing for the P.O.ENCAbbr. in a letterENCMortgage statement, e.g.: Abbr.ENCSEnv. stuffersENCIn an env.ENCSASE, oftenENCSSome refs.ENCEEnding for depend or differENCSEnv. fillersENCSLtr. go-withsENCEEnding for defer or referENCSThey may fill a 57DENCUtil. bill insertENCBusiness abbr.ENCIt's in the mail: Abbr.ENCEEnding for refer or preferENCRef. wk.ENCSASE, e.g.ENCENoun endingENCAbbr. at the bottom of an applicationENCAbbr. in a business letterENCBottom-of-letter abbr.ENCCheck in the mail: Abbr.ENCCover letter abbr.ENCEnv. extraENCLetter accompanier: Abbr.ENCPicture of your kids in a Christmas card: Abbr.ENCReply card, e.g.: Abbr.ENCResponse card, e.g.ENCSAE, e.g.ENCThe check that's in the mail?: Abbr.ENCWedding RSVP, e.g.ENCEEnding for depend or inferENCEEnding with defer or referENCESuffix with referENCSR.S.V.P. cards in wedding invitationsENCLtr. insertENCSSASEs, e.g.ENCEnvelope insert: Abbr.ENCRef. workENCMonthly statement, e.g.: Abbr.ENCInvoice, e.g.: Abbr.ENCRSVP card, e.g.ENCWedding RSVP card, e.g.: Abbr.ENCLook inside abbr.ENC58-Down's insertion: Abbr.ENCDirect mail abbr.ENCSRSVP cards, e.g.ENCSAE with a bill, e.g.ENCEnv. insertion