Module missing hook_perm

mailbuild.module is missing hook_perm. With out this implementation the permission doesn't show up and so you can not administer or use the module.

Here is the hook perm code to fix it.

/**
 * Implementation of hook_perm()
 * @return array An array of valid permissions
 */
function mailbuild_perm() {
  return array('administer mailbuild');
}