Offline is just online with extreme latency
For me it’s also a bit:
When in vacation we should basically tell people that email you:
thanks for emailing me. I’m currently on vacation and offline. This email will be deleted. If it’s important, please email me again when I’m back on Tuesday. If this email stays in my inbox im just creating backlog and the idea of vacation would be useless since I would be delaying work instead of removing myself from it.