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I came up with:

document.documentElement.innerHTML.split('\n').forEach( (line) => line.includes('mailto:') ? console.log(line) : 0 )

But please push this further (is there a shorter way to say document.documentElement.innerHTML ?)

Not minimized but generates a file 'emails.txt':

a = document.createElement('a');

a.download = 'emails.txt';

a.href = `data:text/plain,${Array.from(document.querySelectorAll('a')).map(a => a.href).filter(s => ~s.indexOf('mailto')).join(',')}`;

document.body.appendChild(a);

a.click();

That's a really cool trick for creating a file you can download.

something like this:

`document.getElementsByTagName('a').map(elem => elem.href)`

this works at least in chrome console (to get link urls, not emails)

[...($$('a'))].map(e => e.href)

we shared files on a mounted NAS. getting him the CSV was just a "cp"

can you share the smart line of javascript? You have 60 seconds, go.

Parent mentioned it was behind a login page - in which case using wget becomes more of a hassle.

I wasn't disputing that, I was curious to see the line of javascript