[account42]

> How do you do Gmail style threading view in thunderbird ?

I used an extension once but it broke at some point.

> - see all email bodies for a single conversation in one long list , like a DM in a messenger, with smart hiding of quoted text so you only see new content

Or not so smart hiding of "repeated" content like say an image with a different URL but hey the rest of the <img> tag is the same so close enough for Gmail.