On 28.10.2012, at 4.46, Stan Hoeppner wrote: >> * When are search indexes updated? > > When the index is stale. > >> * Are they updated incrementally? >> * If not, why not? >> * If so, why would a mailbox's index drift out-of-date, as mine had? > > When a sufficient number of messages are added to an IMAP folder the FTS > index becomes stale. This index is not updated in real time. This is > why Timo and others recommend cron'ing a script to index folders > regularly that are searched regularly. This keeps the indexes up to > date and keeps searches fast. If you don't do this or search often, > your indexes become stale. Then each time you do an FTS search the > first thing that happens is an FTS re-indexing of the mail folder. Only > then does it display the search results.
Otherwise correct, but "re-indexing" is the wrong word. No already indexed mails are reindexed. Only new mails are added to the index.
