I agree 100% . Ringcentral @Becky-Community_Manager , your competitors are doing this and I was like... I can't offer that with RingCentral. This is a must and can be a deal changer.
I am pleased to let you know that the RingCentral Labs team just published an Auto-Reply SMS add-in for the RC app. Install, setup and enjoy auto-reply for missed calls, voicemail or SMS.