I have e-mails generated by rsync, duplicity that have size 1.3MB and 2.8MB according to kmail (hovering over email). Every other e-mails (<600KB) are displayed.
The effects are:
- not switching content of message view - last selected e-mail is shown
- empty (white) message view
- "syncing folder contents. please wait"
These are not e-mail with attached logs - these are emails with logs in content, generated by cron.
kmail 5.5.0 (kde-applications 17.04)
989kB message causes problems with refreshing folders in every account - akonadictl restart helped.
*** This bug has been marked as a duplicate of bug 387061 ***