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

Provides :
appdata()
appdata(org.kde.kmail2.appdata.xml)
application()
application(kmail_view.desktop)
application(org.kde.kmail2.desktop)
config(kmail)
kcm_kmail.so()(64bit)
kcm_kmailsummary.so()(64bit)
kcm_kontactsummary.so()(64bit)
kcm_kpimidentities.so()(64bit)
kmail
kmail(x86-64)
kmail5
kmailpart.so()(64bit)
kontact_kmailplugin.so()(64bit)
kontact_summaryplugin.so()(64bit)
libkmailprivate.so.5()(64bit)
mimehandler(application/mbox)
mimehandler(application/x-mimearchive)
mimehandler(message/rfc822)
mimehandler(x-scheme-handler/mailto)

Requires :

libQt5Core.so.5(Qt_5.9)(64bit)
libKF5Codecs.so.5()(64bit)
libKF5TextWidgets.so.5()(64bit)
libKF5AkonadiAgentBase.so.5()(64bit)
libKF5ConfigGui.so.5()(64bit)
libQt5Xml.so.5()(64bit)
libstdc++.so.6(GLIBCXX_3.4)(64bit)
libQt5DBus.so.5(Qt_5)(64bit)
libKF5Wallet.so.5()(64bit)
libKF5KSieveUi.so.5()(64bit)
libKF5NotifyConfig.so.5()(64bit)
libkmailprivate.so.5()(64bit)
libQt5Widgets.so.5(Qt_5)(64bit)
libKF5SonnetUi.so.5()(64bit)
libKF5ConfigCore.so.5()(64bit)
libKF5MimeTreeParser.so.5()(64bit)
config(kmail) = 17.08.3-49.2
libKF5FollowupReminder.so.5()(64bit)
libKF5KCMUtils.so.5()(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libKF5MailCommon.so.5()(64bit)
/bin/sh
libKF5SendLater.so.5()(64bit)
libKF5Notifications.so.5()(64bit)
libKF5PimCommonAkonadi.so.5()(64bit)
libKF5ConfigWidgets.so.5()(64bit)
libKF5IdentityManagement.so.5()(64bit)
libKF5TemplateParser.so.5()(64bit)
libKF5DBusAddons.so.5()(64bit)
libKF5KIOWidgets.so.5()(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
libKF5WindowSystem.so.5()(64bit)
libKF5Completion.so.5()(64bit)
libKF5PimCommon.so.5()(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libKF5LibkdepimAkonadi.so.5()(64bit)
rpmlib(PayloadIsLzma) <= 4.4.6-1
libKF5AkonadiMime.so.5()(64bit)
libKF5AkonadiContact.so.5()(64bit)
libKF5ItemViews.so.5()(64bit)
libKF5Crash.so.5()(64bit)
libQt5Xml.so.5(Qt_5)(64bit)
libKF5Service.so.5()(64bit)
libKF5IconThemes.so.5()(64bit)
libc.so.6()(64bit)
libQt5DBus.so.5()(64bit)
libKF5AkonadiSearchPIM.so.5()(64bit)
libKF5MailTransportAkonadi.so.5()(64bit)
libKF5WidgetsAddons.so.5()(64bit)
libQt5Widgets.so.5()(64bit)
libKF5Contacts.so.5()(64bit)
libqgpgme.so.7()(64bit)
libKF5Libkleo.so.5()(64bit)
libQt5Network.so.5()(64bit)
libKF5Bookmarks.so.5()(64bit)
libKF5Gravatar.so.5()(64bit)
kmail-application-icons
libQt5Core.so.5()(64bit)
libKF5KIOCore.so.5()(64bit)
libstdc++.so.6(CXXABI_1.3)(64bit)
libKF5XmlGui.so.5()(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
libgpgmepp.so.6()(64bit)
libKF5CalendarUtils.so.5()(64bit)
kmail-account-wizard
libKF5I18n.so.5()(64bit)
libKF5Libkdepim.so.5()(64bit)
libKF5Mime.so.5()(64bit)
libKF5Parts.so.5()(64bit)
libQt5Core.so.5(Qt_5)(64bit)
libKF5KontactInterface.so.5()(64bit)
libKF5MessageViewer.so.5()(64bit)
libQt5Gui.so.5()(64bit)
libKF5MessageComposer.so.5()(64bit)
libKF5ItemModels.so.5()(64bit)
libstdc++.so.6()(64bit)
libKF5CalendarCore.so.5()(64bit)
libKF5AkonadiCore.so.5()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libKF5GuiAddons.so.5()(64bit)
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
libKF5AkonadiSearchDebug.so.5()(64bit)
libKF5CoreAddons.so.5()(64bit)
libKF5PimTextEdit.so.5()(64bit)
libKF5WebEngineViewer.so.5()(64bit)
libKF5JobWidgets.so.5()(64bit)
libKF5MailTransport.so.5()(64bit)
libgcc_s.so.1()(64bit)
libQt5Network.so.5(Qt_5)(64bit)
kdepim-runtime
libQt5Gui.so.5(Qt_5)(64bit)
/sbin/ldconfig
libKF5KIOFileWidgets.so.5()(64bit)
libKF5MessageList.so.5()(64bit)
libKF5AkonadiWidgets.so.5()(64bit)
kdepim-addons
libKF5MessageCore.so.5()(64bit)

Content of RPM :
/etc/xdg/kmail.categories
/etc/xdg/kmail.renamecategories
/usr/bin/akonadi_archivemail_agent
/usr/bin/akonadi_followupreminder_agent
/usr/bin/akonadi_mailfilter_agent
/usr/bin/akonadi_sendlater_agent
/usr/bin/kmail
/usr/lib64/libkmailprivate.so.5
/usr/lib64/libkmailprivate.so.5.6.3
/usr/lib64/qt5/plugins/kcm_kmail.so
/usr/lib64/qt5/plugins/kcm_kmailsummary.so
/usr/lib64/qt5/plugins/kcm_kontactsummary.so
/usr/lib64/qt5/plugins/kcm_kpimidentities.so
/usr/lib64/qt5/plugins/kmailpart.so
/usr/lib64/qt5/plugins/kontact_kmailplugin.so
/usr/lib64/qt5/plugins/kontact_summaryplugin.so
/usr/share/akonadi/agents
/usr/share/akonadi/agents/archivemailagent.desktop
/usr/share/akonadi/agents/followupreminder.desktop
/usr/share/akonadi/agents/mailfilteragent.desktop
/usr/share/akonadi/agents/sendlateragent.desktop
/usr/share/appdata
/usr/share/appdata/org.kde.kmail2.appdata.xml
/usr/share/applications/kmail_view.desktop
/usr/share/applications/org.kde.kmail2.desktop
/usr/share/config.kcfg/archivemailagentsettings.kcfg
/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/doc/HTML/en/akonadi_archivemail_agent
There is 95 files more in these RPM.