diff -Naur icewm-1.3.12.orig/src/default.h icewm-1.3.12/src/default.h
--- icewm-1.3.12.orig/src/default.h	2015-12-17 02:17:06.000000000 +0100
+++ icewm-1.3.12/src/default.h	2017-02-20 15:58:12.275577702 +0100
@@ -174,8 +174,8 @@
 #endif
 
 XSV(const char *, mailBoxPath,                  0)
-XSV(const char *, mailCommand,                  "xterm -name alpine -title ALPINE -e alpine")
-XSV(const char *, mailClassHint,                "alpine.XTerm")
+XSV(const char *, mailCommand,                  "xterm -name mutt -e mutt")
+XSV(const char *, mailClassHint,                "mutt.XTerm")
 XSV(const char *, newMailCommand,               0)
 XSV(const char *, lockCommand,                  0)
 XSV(const char *, clockCommand,                 "xclock -name icewm -title Clock")