Absolutely! The author doesn't mention what type of communication he means, but for business communications (in Belgium, where the author is from), anything over 24 hours (one working day) must have some explanation.

It's always better to explain yourself, otherwise, it looks unprofessional if you reply after a week as though it's normal.

Overall, the recommendations about email look very personal to the author and perhaps shouldn't be taken as general advice.

▲

Gud 3 hours ago | parent | next [-]

Not everyone is glued to their computer.

I don’t owe an explanation to anyone.

	▲	layer8 6 minutes ago \| parent [-]
		> Not everyone is glued to their computer. That’s what out-of-office automatic replies are for, which will include information on what business day you will be back, and often will also specify who is your substitute while you’re away. It’s standard practice for B2B communication.

▲

itopaloglu83 4 hours ago | parent | prev [-]

Maybe on defined routine processes, but otherwise your email has a lower priority, unless it’s an urgent matter.

	▲	Juliate 4 hours ago \| parent [-]
		If it's urgent, it's a phone call.