SUMMARY kmail does not display mail (at all) when it has no content, even if attachments exist. STEPS TO REPRODUCE 1. create empty plain text mail with attachment (7z file in my case) from MS Outlook 2016 (in my case, I don't know if this matters) 2. send this to kmail account 3. view with kmail OBSERVED RESULT kmail does not display, but also does not empty, the message body area. It just keeps displaying the previously displayed message EXPECTED RESULT kmail should show an empty message body and the attachment area (or an icon for the attachment(s)). SOFTWARE/OS VERSIONS Windows: - MacOS: - Linux/KDE Plasma: KDE Neon 18.04 with all updates applied, KMail 5.10.1 (available in About System) ADDITIONAL INFORMATION