I had to take a sick day recently due to a flu that knocked me out – I wrote my clients to let them know, made arrangements with more pressing deadlines, and drifted in and out of consciousness.
Most of my clients respected that I needed to get better, with messages like “hope you feel better soon! Get well!” One client sent me a number of messages throughout the day with questions. When I caught up the next day:
Me: I’m sorry for not responding, but to be frank I couldn’t stay awake long enough to respond yesterday.
Client: Even if you’re sick, it’s your responsibility to keep up with communications. That’s just being a professional.