在所有郵件處理的各式各樣的編碼中，很多編碼的目的都是通過編碼手段使
得七位字符的郵件協議體系可以傳送八位的二進制文件、雙字節語言文字等等。
Quoted-Printable也是這樣壹些編碼中的壹個， 它的目的同樣是幫助非ASCII
編碼的信件傳輸通過 SMTP。Quoted-Printable 編碼是字符對應的編碼，每個未
編碼的二進制字符被編碼成三個字符，即壹個等號和壹個十六進制的數字，如“=A8”。
Quoted-Printable編碼的源碼樣式如下:
=D4=DA=CB=F9=D3=D0=D3=CA=BC=FE=B4=A6=C0=ED=B5=C4=B8=F7=CA=BD=B8=F7=D1=F9=
=B5=C4=B1=E0=C2=EB=D6=D0=A3=AC=BA=DC=B6=E0=B1=E0=C2=EB=B5=C4=C4=BF=B5=C4=
=B6=BC=CA=C7=CD=A8=B9=FD=B1=E0=C2=EB=CA=D6=B6=CE=CA=B9
=B5=C3=C6=DF=CE=BB=D7=D6=B7=FB=B5=C4=D3=CA=BC=FE=D0=AD=D2=E9=CC=E5=CF=B5=
=BF=C9=D2=D4=B4=AB=CB=CD=B0=CB=CE=BB=B5=C4=B6=FE=BD=F8=D6=C6=CE=C4=BC=FE=
=A1=A2=CB=AB=D7=D6=BD=DA=D3=EF=D1=D4=CE=C4=D7=D6=B5=C8=B5=C8=A1=A3
Quoted-Printable =
=D2=B2=CA=C7=D5=E2=D1=F9=D2=BB=D0=A9=B1=E0=C2=EB=D6=D0=B5=C4=D2=BB=B8=F6=
=A3=AC =CB=FC=B5=C4=C4=BF=B5=C4=CD=AC=D1=F9=CA=C7=B0=EF=D6=FA=B7=C7
ASCII=
=B1=E0=C2=EB=B5=C4=D0=C5=BC=FE=B4=AB=CA=E4=CD=A8=B9=FD =
SMTP=A1=A3Quoted-Printable =
=B1=E0=C2=EB=CA=C7=D7=D6=B7=FB=B6=D4=D3=A6=B5=C4=B1=E0=C2=EB=A3=AC=C3=BF=
=B8=F6=CE=B4
=B1=E0=C2=EB=B5=C4=B6=FE=BD=F8=D6=C6=D7=D6=B7=FB=B1=BB=B1=E0=C2=EB=B3=C9=
=C8=FD=B8=F6=D7=D6=B7=FB=A3=AC=BC=B4=D2=BB=B8=F6=B5=C8=BA=C5=BA=CD=D2=BB=
=B8=F6=CA=AE=C1=F9=BD=F8=D6=C6=B5=C4=CA=FD=D7=D6=A3=AC=C8=E7=
=A1=B0=3DA8=A1=B1=A1=A3