diff --git a/runtime/ftplugin/muttrc.vim b/runtime/ftplugin/muttrc.vim
index c8ad0f2..bd01367 100644
--- a/runtime/ftplugin/muttrc.vim
+++ b/runtime/ftplugin/muttrc.vim
@@ -18,5 +18,21 @@
 
 let &l:include = '^\s*source\>'
 
+if has('unix') && executable('less')
+  if !has('gui_running')
+    command -buffer -nargs=1 Sman
+          \ silent exe '!' . 'LESS= MANPAGER="less --pattern=''^\s+' . <q-args> . '\b'' --hilite-search" man ' . 'muttrc' |
+          \ redraw!
+  elseif has('terminal')
+    command -buffer -nargs=1 Sman
+          \ silent exe 'term ' . 'env LESS= MANPAGER="less --pattern=''' . escape('^\s+' . <q-args> . '\b', '\') . ''' --hilite-search" man ' . 'muttrc'
+  endif
+  if exists(':Sman') == 2
+    setlocal iskeyword+=-
+    setlocal keywordprg=:Sman
+    let b:undo_ftplugin .= '| setlocal keywordprg< iskeyword<'
+  endif
+endif
+
 let &cpo = s:cpo_save
 unlet s:cpo_save