diff --git a/messageviewer/src/viewer/webengine/mailwebengineview.cpp b/messageviewer/src/viewer/webengine/mailwebengineview.cpp
--- a/messageviewer/src/viewer/webengine/mailwebengineview.cpp
+++ b/messageviewer/src/viewer/webengine/mailwebengineview.cpp
@@ -119,6 +119,16 @@
 
 MailWebEngineView::~MailWebEngineView()
 {
+    // The MailWebEnginePage must be deleted before its QWebEngineProfile
+    // (created as a child of ourselves in the constructor above) is deleted,
+    // otherwise there will be a crash in QWebEnginePagePrivate::bindPageAndWidget().
+    // See https://phabricator.kde.org/D19559 for more information.
+    //
+    // From the QWebEnginePage API documentation: "If the profile is not the
+    // default profile, the caller must ensure that the profile stays alive for
+    // as long as the page does".
+    delete d->mPageEngine;
+
     delete d;
 }