Sherpaa’s messaging is active from 8am to 8pm EST. However, for urgent issues, you can always call our doctors via the app twenty four hours a day. After you create a case, our average response time is about 20 minutes. However, our doctors handle cases based on urgency. If you create a case, and it’s urgent, you’ll often get a response in just a few minutes. If it’s not time-sensitive, you’ll get a response in less than 2 hours.