My experience in 2025 must be extremely different from yours. I don't even know what alternate channels you might have in mind.

Chat. Matrix for nerds, discord for gamers and redditors, telegram for everyone else who cares and imessage/rcs for those who don’t.

Exactly zero people I regularly communicate with other than my teenage son uses any of those regularly.

The only people who use RCS to contact me are businesses sending notifications or spam.

Unlike e-mail where I do get personal correspondence regularly.

I don't expect my experience is typical, but I don't think yours are either - we all live in bubbles.

I suppose you could say being younger is living in a bubble. I assure you nobody under 35 is using email for the majority of their personal correspondance. Email is for business.

The claim above that we responded to was much broader.

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What's chat? I've used discord, but do 100x the volume in email and sms.