Yeah, because we fill out the whole count rather than returning just the first page, a search that returns tons of messages will be slower than gmail. You can

Yeah, because we fill out the whole count rather than returning just the first page, a search that returns tons of messages will be slower than gmail. You can limit the set of returned messages with time ranges. One of our slack messages is something that's become a bit of a cliche! "JMAP will fix it" - in this case, a lot of the cost is generating the message counts by iterating every match, and that's not going to be cheaper in JMAP. We don't have data structures that allow sorted partial search responses, so we can't generate the first page until we've resolved the search for every message :(