Dear Julien;

After using notmuch for a while, I came to the conclusion that tags are mostly irelevant. What is a game changer for me is fast global search. And yes, I changed from using dovecot search, so I mean much faster than that. Actually I remember that from the Human Computer Interface course that I took in the early Neolithic era that speed of response has been measured as a key factor in interfaces, so maybe it isn't just me.

Of course there are tradeoffs, some of which you mention.

David