The filter feature on a folder and the Find messages action do not find certain emails. I haven't been able to figure out what's special about these emails, but it already happened to me with 3 emails. The emails are in English, no special Unicode chars. The emails are on the folder, but searching for body, from, or subject won't bring them on the results. Of course I search full message and that didn't work either. I'm on Opensuse 13.1, KDE 4.13, using Baloo. Reproducible: Always
I can confirm this latest Kubuntu 14.04 with KDE 4.13 Duplicates: ? https://bugs.kde.org/show_bug.cgi?id=333403 https://bugs.kde.org/show_bug.cgi?id=334112
Searching inside sent-mail is only finding emails I wrote today. Given that there are >40k messages in that folder, going through and finding an email I sent sometime last year will not be pleasant. I hope someone responds soon with some tips for debugging this.
Update: in 333403 it seems that a fix has been implemented, it's just not in kubuntu yet.
*** This bug has been marked as a duplicate of bug 333403 ***