>Full-text search is entirely client side (not via IMAP)

Setting up server-side Xapian full-text search and disabling the crap client-side one in Thunderbird was one of the best improvements I made to my email usability. What makes your client-side search better? It's usually not speed I'm looking for, but rather precision, such as double quoted phrases (sorely missing from Thunderbird's client-side search), filtering by a mixture of things, etc.

I wish more clients had an option for server-side-only search (looking at you, iOS Mail.app) and/or had a nice UI for it (ctrl+shift+f dialog in Thunderbird is janky but gets results)

We're using Orama for client-side search, which is best in class as far as we can tell, after quite an extensive period of research.

It is able to use BM25, QPS, or PT15.

We're still playing around with various weights/settings, but have seen fantastic results so far.

What do you mean by "double quoted phrases"? Do you mean the ability to search for an _exact_ term?

It needs to be open source. If it's not open source, it's a trap.

>not suck

>web-tech

Pick one.

I couldn't find any info on whether this is FOSS or what license it uses.

The fastmail web client is actually decent as such things go, and its search works ok. When I have trouble with Thunderbird search I sometimes log into Fastmail and use their web client.