@item mail-source-directory
@vindex mail-source-directory
-\e$B%U%!%$%k$,\e(B (\e$B$b$7$"$l$P\e(B) \e$BJ]B8$5$l$k%G%#%l%/%H%j!<$G$9!#=i4|CM\e(B
-\e$B$O\e(B @file{~/Mail/} \e$B$G$9!#8=;~E@$G$O!"$3$l$,;H$o$l$kM#0l$N$b$N$OA0$NJQ?t\e(B
-\e$B$,\e(B @code{nil} \e$B$G$"$C$?>l9g!"F~$C$F$-$?%U%!%$%k$,J]B8$5$l$k>l=j$N;XDj$G$9!#\e(B
+\e$BF~$C$F$-$?%a!<%k%=!<%9$N%U%!%$%k$,\e(B (\e$B$b$7$"$l$P\e(B) \e$BJ]B8$5$l$k%G%#%l%/%H%j!<\e(B
+\e$B$G$9!#=i4|CM$O\e(B @file{~/Mail/} \e$B$G$9!#8=;~E@$G$O!"$3$l$,;H$o$l$kM#0l$N$b$N\e(B
+\e$B$OJQ?t\e(B @code{mail-source-delete-incoming} \e$B$,\e(B @code{nil} \e$B$^$?$O?t;z$G$"$C\e(B
+\e$B$?>l9g!"F~$C$F$-$?%U%!%$%k$,J]B8$5$l$k>l=j$N;XDj$G$9!#\e(B
@item mail-source-incoming-file-prefix
@vindex mail-source-incoming-file-prefix