Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
appdata()
appdata(org.kde.kmail.appdata.xml)
application()
application(kmail_view.desktop)
application(org.kde.kmail.desktop)
config(kmail5)
kmail5
kmail5(x86-32)
libkmailprivate.so.5
mimehandler(application/mbox)
mimehandler(application/x-mimearchive)
mimehandler(message/rfc822)
mimehandler(x-scheme-handler/mailto)

Requires :

libQt5Gui.so.5(Qt_5)
libKF5KIOFileWidgets.so.5
libKF5ItemViews.so.5
libkmailprivate.so.5
libKF5KCMUtils.so.5
libKF5Bookmarks.so.5
libKF5Contacts.so.5
libKF5Gpgmepp-pthread.so.5
libKF5Notifications.so.5
libKF5IdentityManagement.so.5
libGrantlee_Templates.so.5
libKF5MessageComposer.so.5
libKF5AkonadiMime.so.5
libQt5Network.so.5(Qt_5)
libgcc_s.so.1
libQt5Core.so.5(Qt_5)
libc.so.6(GLIBC_2.1.3)
libKF5ItemModels.so.5
libQt5Widgets.so.5
libKF5IconThemes.so.5
libKF5WindowSystem.so.5
libKF5TemplateParser.so.5
libKF5Service.so.5
libQt5DBus.so.5
libKF5JobWidgets.so.5
libKF5AkonadiWidgets.so.5
libKF5WidgetsAddons.so.5
libQt5Xml.so.5
libQt5Xml.so.5(Qt_5)
libKF5Completion.so.5
libKF5Codecs.so.5
/bin/sh
rpmlib(CompressedFileNames) <= 3.0.4-1
libstdc++.so.6
libKF5MessageList.so.5
rpmlib(PayloadIsLzma) <= 4.4.6-1
libKF5Gravatar.so.5
libQt5Network.so.5
libQt5Core.so.5
libKF5Libkdepim.so.5
libc.so.6
libKF5Wallet.so.5
libKF5MailTransport.so.5
config(kmail5) = 15.12.3-3.5
libkdepim = 15.12.3
libc.so.6(GLIBC_2.3.4)
libKF5PimCommon.so.5
libstdc++.so.6(GLIBCXX_3.4)
libKF5MessageViewer.so.5
libKF5CalendarSupport.so.5
libKF5ConfigCore.so.5
libKF5CoreAddons.so.5
libKF5TextWidgets.so.5
libKF5Mime.so.5
libKF5PimTextEdit.so.5
libQt5Widgets.so.5(Qt_5)
libKF5AkonadiCalendar.so.5
libKF5DBusAddons.so.5
libKF5NotifyConfig.so.5
libc.so.6(GLIBC_2.4)
libKF5AkonadiCore.so.5
libKF5Tnef.so.5
libKF5CalendarCore.so.5
libQt5Core.so.5(Qt_5.5)
libKF5ConfigGui.so.5
libKF5CalendarUtils.so.5
libKF5GuiAddons.so.5
libKF5XmlGui.so.5
libKF5MessageCore.so.5
libKF5KontactInterface.so.5
libKF5ConfigWidgets.so.5
libKF5KManageSieve.so.5
libKF5SonnetUi.so.5
libc.so.6(GLIBC_2.0)
libKF5AkonadiContact.so.5
libKF5FollowupReminder.so.5
libQt5Gui.so.5
libKF5Parts.so.5
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libKF5KIOWidgets.so.5
libKF5KSieveUi.so.5
libKF5I18n.so.5
libKF5AkonadiPrivate.so.5
libQt5DBus.so.5(Qt_5)
libKF5AkonadiSearchDebug.so.5
libKF5IncidenceEditorsng.so.5
libKF5MailCommon.so.5
libKF5SendLater.so.5
libKF5KIOCore.so.5
libKF5Libkleo.so.5
libKF5Crash.so.5
libgcc_s.so.1(GCC_3.0)
kdepim-runtime
libstdc++.so.6(CXXABI_1.3)
/sbin/ldconfig
libKF5KDELibs4Support.so.5

Content of RPM :
/etc/xdg/kmail.antispamrc
/etc/xdg/kmail.antivirusrc
/etc/xdg/ksieve_script.knsrc
/etc/xdg/messageviewer_header_themes.knsrc
/usr/bin/kmail
/usr/bin/sieveeditor
/usr/lib/libkmailprivate.so.5
/usr/lib/libkmailprivate.so.5.1.3
/usr/lib/qt5/plugins/grantlee
/usr/lib/qt5/plugins/grantlee/5.0
/usr/lib/qt5/plugins/grantlee/5.0/grantlee_messageheaderfilters.so
/usr/lib/qt5/plugins/kcm_kmail.so
/usr/lib/qt5/plugins/kcm_kmailsummary.so
/usr/lib/qt5/plugins/kcm_kpimidentities.so
/usr/lib/qt5/plugins/kmailpart.so
/usr/lib/qt5/plugins/kontact_kmailplugin.so
/usr/lib/qt5/plugins/messageviewer_bodypartformatter_application_mstnef.so
/usr/lib/qt5/plugins/messageviewer_bodypartformatter_text_calendar.so
/usr/lib/qt5/plugins/messageviewer_bodypartformatter_text_vcard.so
/usr/lib/qt5/plugins/messageviewer_bodypartformatter_text_xdiff.so
/usr/share/appdata/org.kde.kmail.appdata.xml
/usr/share/applications/kmail_view.desktop
/usr/share/applications/org.kde.kmail.desktop
/usr/share/composereditor
/usr/share/composereditor/composereditorinitialhtml
/usr/share/config.kcfg/kmail.kcfg
/usr/share/dbus-1/interfaces/org.kde.kmail.kmail.xml
/usr/share/dbus-1/interfaces/org.kde.kmail.kmailpart.xml
/usr/share/dbus-1/interfaces/org.kde.mailtransport.service.xml
/usr/share/doc/HTML/en/kmail
There is 124 files more in these RPM.