Version: 1.5.94 (using KDE 3.1.94 (CVS >= 20031206), compiled sources) Compiler: gcc version 3.3.2 (Debian) OS: Linux (i686) release 2.6.1dell-optiplex After deleting an item and pressing 'undo' KMail simply (always) copies the mail from the trash. In cases where the deleted email has not been flushed yet, an un-delete will be very much faster. I had the extreme case where on a remote IMap I deleted a 2Mb file (which downloads in 20 seconds) so that took 10 seconds. No problem Then I pressed undo only to find out that the 20 seconds were uploaded again; which took 5 minutes. Notice that auto-flushing of IMap folders can be turned off so mails are actually very very sparsingly deleted.
*** This bug has been marked as a duplicate of bug 94479 ***