I check my work email once every 4 days on a good week, and my personal email nearly once every 2 months. Email isn't really a good channel for urgently getting in touch for some people.

True. And when discussing generalities, it is a given people with specifics will stand out. I have mine, you have yours.

Personally, I deal with others on whatever terms they tend to present to me.

So, if someone does not respond quickly, fine. Or they want SMS, or whatever, that is fine too.

I figure they have reasons, seek low friction amd give consideration I am given.