I dont expect an immediate reply, just within reasonable time. I i've made the experience that a question you ask upfront simply gets ignored and then forgotten.
When that happens to me, I'll give it a reasonable amount of time based on the importance of the question (which could be a few hours or a few days) and then gently prompt with "hey, sorry to bug you, wondering if you had a chance to look at my question?". That has never not worked out for me.
If it's such an emergency that it can't wait, then I can call them. But most of the things we think are emergencies aren't, and most things can wait longer than we think.
If it's such an emergency that it can't wait, then I can call them. But most of the things we think are emergencies aren't, and most things can wait longer than we think.