• jennwiththesea@lemmy.world
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        1 year ago

        Say I have Gmail and you have Outlook. I can email you, you can email me, and everything will come across just fine. But I can’t use my Gmail (lemmy.world) credentials to login at Outlook (lemmy.australia, for a random example), and you can’t use your Outlook credentials to login in at Gmail. Like that, but all of your emails are public.

        It’s like a thousand different reddits who can all communicate with each other, and post on each other.

        Other people like the countries analogy. I am a citizen of my country, but I can visit other places and speak with people who live elsewhere.