setPref($data_dir,$username,"mailfetch_alias_$mf_sn", (isset($mf_alias)?$mf_alias:""));
setPref($data_dir,$username,"mailfetch_user_$mf_sn",(isset($mf_user)?$mf_user:""));
setPref($data_dir,$username,"mailfetch_pass_$mf_sn",(isset($mf_pass)?encrypt( $mf_pass ) :""));
setPref($data_dir,$username,"mailfetch_alias_$mf_sn", (isset($mf_alias)?$mf_alias:""));
setPref($data_dir,$username,"mailfetch_user_$mf_sn",(isset($mf_user)?$mf_user:""));
setPref($data_dir,$username,"mailfetch_pass_$mf_sn",(isset($mf_pass)?encrypt( $mf_pass ) :""));