diff --git a/mimetreeparser/src/objecttreeparser.h b/mimetreeparser/src/objecttreeparser.h
--- a/mimetreeparser/src/objecttreeparser.h
+++ b/mimetreeparser/src/objecttreeparser.h
@@ -270,9 +270,9 @@
     ObjectTreeParser(const ObjectTreeParser &other);
 
 public:
-    explicit ObjectTreeParser(Interface::ObjectTreeSource *source, NodeHelper *nodeHelper = nullptr, bool showOneMimePart = false, const AttachmentStrategy *attachmentStrategy = nullptr);
+    explicit ObjectTreeParser(Interface::ObjectTreeSource *source, NodeHelper *nodeHelper = nullptr, bool showOneMimePart = false);
 
-    explicit ObjectTreeParser(const ObjectTreeParser *topLevelParser, bool showOneMimePart = false, const AttachmentStrategy *attachmentStrategy = nullptr);
+    explicit ObjectTreeParser(const ObjectTreeParser *topLevelParser, bool showOneMimePart = false);
     virtual ~ObjectTreeParser();
 
     void setAllowAsync(bool allow);
@@ -307,8 +307,6 @@
     bool showOnlyOneMimePart() const;
     void setShowOnlyOneMimePart(bool show);
 
-    const AttachmentStrategy *attachmentStrategy() const;
-
     HtmlWriter *htmlWriter() const;
 
     NodeHelper *nodeHelper() const;
diff --git a/mimetreeparser/src/objecttreeparser.cpp b/mimetreeparser/src/objecttreeparser.cpp
--- a/mimetreeparser/src/objecttreeparser.cpp
+++ b/mimetreeparser/src/objecttreeparser.cpp
@@ -60,38 +60,33 @@
 
 using namespace MimeTreeParser;
 
-ObjectTreeParser::ObjectTreeParser(const ObjectTreeParser *topLevelParser, bool showOnlyOneMimePart, const AttachmentStrategy *strategy)
+ObjectTreeParser::ObjectTreeParser(const ObjectTreeParser *topLevelParser, bool showOnlyOneMimePart)
     : mSource(topLevelParser->mSource)
     , mNodeHelper(topLevelParser->mNodeHelper)
     , mHtmlWriter(topLevelParser->mHtmlWriter)
     , mTopLevelContent(topLevelParser->mTopLevelContent)
     , mShowOnlyOneMimePart(showOnlyOneMimePart)
     , mHasPendingAsyncJobs(false)
     , mAllowAsync(topLevelParser->mAllowAsync)
-    , mAttachmentStrategy(strategy)
 {
     init();
 }
 
-ObjectTreeParser::ObjectTreeParser(Interface::ObjectTreeSource *source, MimeTreeParser::NodeHelper *nodeHelper, bool showOnlyOneMimePart, const AttachmentStrategy *strategy)
+ObjectTreeParser::ObjectTreeParser(Interface::ObjectTreeSource *source, MimeTreeParser::NodeHelper *nodeHelper, bool showOnlyOneMimePart)
     : mSource(source)
     , mNodeHelper(nodeHelper)
     , mHtmlWriter(nullptr)
     , mTopLevelContent(nullptr)
     , mShowOnlyOneMimePart(showOnlyOneMimePart)
     , mHasPendingAsyncJobs(false)
     , mAllowAsync(false)
-    , mAttachmentStrategy(strategy)
 {
     init();
 }
 
 void ObjectTreeParser::init()
 {
     Q_ASSERT(mSource);
-    if (!attachmentStrategy()) {
-        mAttachmentStrategy = mSource->attachmentStrategy();
-    }
 
     if (!mNodeHelper) {
         mNodeHelper = new NodeHelper();
@@ -110,7 +105,6 @@
     , mShowOnlyOneMimePart(other.showOnlyOneMimePart())
     , mHasPendingAsyncJobs(other.hasPendingAsyncJobs())
     , mAllowAsync(other.allowAsync())
-    , mAttachmentStrategy(other.attachmentStrategy())
     , mDeleteNodeHelper(false)
 {
 }
@@ -362,11 +356,6 @@
     mShowOnlyOneMimePart = show;
 }
 
-const AttachmentStrategy *ObjectTreeParser::attachmentStrategy() const
-{
-    return mAttachmentStrategy;
-}
-
 HtmlWriter *ObjectTreeParser::htmlWriter() const
 {
     if (mHtmlWriter) {