split list of recipients into comma separated string for flash message
split list of recipients into comma separated string for flash message

PercussiveRepair/elastatus,trendmicro/elastatus,PercussiveRepair/elastatus,trendmicro/elastatus,mindcandy/elastatus,trendmicro/elastatus,mindcandy/elastatus,mindcandy/elastatus,PercussiveRepair/elastatus