address addressee aerogramme airmail box number certified mail Christmas card c/o compliment slip correspond correspondence correspondent covering letter cover letter date stamp dead letter direct mail enclose enclosure envelope epistle esquire express express mail first class first-class forward forwarding address FPO frank franking machine Freepost general delivery Jiffy bag junk mail letterbox love letter mail mailbag mailbox mail carrier mail drop mailer mailing list mailman mailshot mail train manila missive money order note card notelet notepaper nr packet boat parcel parcel post pcm pen friend pen pal pigeonhole pillar box PO PO Box poison-pen letter post(n) post(v) postage postage meter postage stamp postal postal order postbag postbox postcard postcode poste restante postie postman postmark postmaster postmistress post office post office box postscript pp. PPS PS redirect register registered post reply-paid RR sae salutation SASE second class self-addressed sender snail mail sorting office special delivery stamp(n) stamp(v) stamped addressed envelope surface mail third class valentine writing paper X zip code