Joanna C

Joanna C

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I build products that feel invisible in the best way - the kind that just work, even in the messiest, highest-stakes moments. At Airbnb, I led platform teams that power agent tools, AI-driven defenses, and enforcement systems that keep our community safe and supported. I’ve launched systems that scale trust, boost efficiency, and solve problems before guests and hosts even see them, from appeals flows to intelligent operations.

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mailX by mailwarmp/mailx-by-mailwarm-yc-s20•

13h ago

mailX is now inside ChatGPT: ask it why your emails go to spam

Hey makers

"Why are my emails going to spam?" is a question people now ask ChatGPT instead of Google. Until now, the answer was a generic checklist, because ChatGPT can't read your DNS.

Unpromptp/unprompt-2•

1d ago

Where do you draw the line between AI at work and AI on your own time?

Building apps is my job, and AI is part of how I do it. After hours, I can't always tell if it's still work.

In Unprompt, I set my work hours once. It uses them to sort work from personal.

The blurry part is my own time: a side project at 10pm, a script for a friend on a Sunday.

How do you draw that line? Fixed hours, or a separate machine?

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