小弟很菜，在网上找了个POP3的例子。不过读出来的邮件都是乱码，我用Convert.FromBase64String也不行
得到的结果大致分为以下几种
第一种
begin 666 [!! SPAM] letter for business.htm
M/&AT;6P^#0H\:&5A9#X- "CQT:71L93[.WK 'JS.+.Q+6U/ "]T:71L93X- "CQM
M971A(&AT= ' M97%U:78](D-O;G1E;G0M5 'EP92(@8V]N=&5N=#TB=&5X= "]H
M=&UL.R!C:&%R <V5T/6=B,C,Q,B(^#0H\+VAE860^#0H- "CQB;V1Y(&)G8V]L
M;W(](B-&1D9&1D8B( '1E> '0](B,P,# P,# B/@T*/&)R/@T*2&5L;&\L(#QB
M <CX- "D1E87(@36%D86T@86YD(&]R(&=E;G1L96UE;BP\8G(^#0I792!A <F4@
M <&QE87-E9 "!T;R!I;G1R;V1U8V4@;W5R <V5L=F5S(&%S($)E:6II;F <@2 '5I
M(&UA;B!38VEE;F-E( "9A;7 [(%1E8VAN;VQO9WD@#0I#;RXL($QT9 "X@5V4@
M87)E(&QO8V%T960@:6X@8V%P:71A; "! "96EJ:6YG($-I= 'DN($)E:6II;F <@
M2 '5I($UA;B!38VEE;F-E(&%N9 " - "E1E8VAN;VQO9WD@0V\N+ "!,=&0N(&ES
M(&$@;&%R9V4@ <&]W97)F=6P@ <W1O8VLM:&]L9&EN9R!S> 7-T96T@96YT97)P
M <FES92!W:71H( T* < ')O9 '5C= ',@ <V]U <F-I;F <@:6YF;W)M871I;VX@86YD
M( '!U <F-H87-I;F <@;F5T=V]R:R!H;VUE(&%N9 "!A8G)O860N(%=E(&AA=F4@
M#0IA; ')E861Y(&)U:6QT( '5P(&=O;V0@8V]O <&5R871I;VX@ <F5L871I;VYS
M:&EP( '=I=&@@;6%N> 2!D;VUE <W1I8R!E;G1E <G!R:7-E <R - "F%N9 "!M86YU
M9F%C= '5R97)S+ "!S;R!W92!A <F4@:6X@82!G;V]D( '!O <VET:6]N( '1O(&]F
M9F5R(&UA;GD@8V]M;6]D:71Y( '!R;V1U8V5D( T*:6X@0VAI;F$@=&\@> 6]U
M( '=I=&@@8F5S= "!Q=6%L:71Y(&%N9 "!C;VUP971I=&EV92!P <FEC92X@5V4@
M:&%V92!A( '=I9&4@ <F%N9V4@#0IO9B!P <F]D=6-T <R!C;VYC97)N:6YG(&UA
M8VAI;F4L(&EN9 '5S= ')I86P@ < ')O9 '5C= ',L(&5L96-T <FEC86P@9&5V:6-E
M <RP@96QE8W1R;VYI8R - "G!R;V1U8W1S+ "!C;VUP=71E <BP@8VAE;6EC86P@
M < ')O9 '5C= ',L(&UE9&EC86P@8V%R92P@:&%N9&EC <F%F= "P@861V97)T:7-E
M;65N= "P@#0IA;F0@ <V\@;VXN(#QB <CX- "D9O <G1H97)M;W)E+ "!W92!C86X@
M9FEN9 "!A;F0@ < '5R8VAA <V4@;6]S= "!C;VUM;V1I=&EE <R!T:&%T( 'EO=2!A
M <F4@;&]O:VEN9R!F;W(N/&)R/@T*26X@=&AE(&%I;2!O9B!M86MI;F <@;75T
M=6%L(&1E=F5L;W!M96YT+ "!W92!A <F4@;&]O:VEN9R!F;W)W87)D( '1O(&AA
M=F4@8V]O <&5R871I;VX@#0IW:71H( 'EO=2P@:VEN9&QY( '!L96%S92!L970@
M=7,@:&%V92!Y;W5R(&1E=&%I;&5D( ')E <75I <F5M96YT <R!F;W(@=&AE( '!R
M;V1U8W0@#0HH26YC; '5D960@3F%M92P@4W!E8VEF:6-A=&EO;BP@475A;G1I
M= 'DL($1E <W1I;F%T:6]N( '!O <G0L971C+BDN/&)R/@T*66]U <B!E87)L> 2!R
M97!L> 2!W:6QL(&)E(&AI9VAL> 2!A < '!R96-I871E9 "X\8G(^#0I "97-T( ')E
M9V%R9 ',- "CQP/D)E:6II;F <@2 '5I($UA;B!38VEE;F-E(&%N9 "!496-H;F]L
M;V=Y($-O+BP@3 '1D+CQB <CX- "B @061D.B!!+3,P. "!2;V]M+ " C.3@@2FEA
M;B! '=6\@4F]A9 "P@0VAA;R!986YG($1I <W1R:6-T+ "! "96EJ:6YG($-I= 'DL
M($-H:6YA/&)R/@T*( "!::7 @8V]D93H@,3 P,#(R/&)R/@T*( "!#;VYT86-T
M.B!- <BX@3&D@+R!- <BX@4VD\8G(^#0H@(%1E;#HP,3 M.#4X.3$Y-#D@.#4X
M.3,S-S(\8G(^#0H@($9A> #HP,3 M.#4X.3$P-C@@/&)R/@T*( "!%;6%I;#H@
M: '5I;6%N-C X0#$R-BYC;VT@: '5I;6%N,S X0 'EA:&]O+F-O;2YC;CPO <#X-
< "CQP/CPO <#X- "CPO8F]D> 3X- "CPO: '1M;#X- "@``
`
end
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