diff --git a/resources/sql/db_init_sqlite.sql b/resources/sql/db_init_sqlite.sql
index 22c4ac0d4..c7f557569 100644
--- a/resources/sql/db_init_sqlite.sql
+++ b/resources/sql/db_init_sqlite.sql
@@ -14,7 +14,7 @@ CREATE TABLE Accounts (
   proxy_username  TEXT,
   proxy_password  TEXT,
   /* Custom column for (serialized) custom account-specific data. */
-  custom_data   TEXT
+  custom_data     TEXT
 );
 -- !
 CREATE TABLE Categories (
@@ -61,6 +61,7 @@ CREATE TABLE Messages (
   date_created    INTEGER     NOT NULL CHECK (date_created >= 0),
   contents        TEXT,
   enclosures      TEXT,
+  score           REAL        NOT NULL DEFAULT 0.0 CHECK (score >= 0.0 AND score <= 100.0),
   account_id      INTEGER     NOT NULL,
   custom_id       TEXT,
   custom_hash     TEXT,
diff --git a/src/librssguard/core/message.cpp b/src/librssguard/core/message.cpp
index ca17cf4b6..e7fb4fdce 100644
--- a/src/librssguard/core/message.cpp
+++ b/src/librssguard/core/message.cpp
@@ -66,6 +66,7 @@ Message::Message() {
   m_title = m_url = m_author = m_contents = m_feedId = m_customId = m_customHash = "";
   m_enclosures = QList<Enclosure>();
   m_accountId = m_id = 0;
+  m_score = 0.0;
   m_isRead = m_isImportant = m_isDeleted = false;
   m_assignedLabels = QList<Label*>();
 }
@@ -106,6 +107,7 @@ Message Message::fromSqlRecord(const QSqlRecord& record, bool* result) {
   message.m_created = TextFactory::parseDateTime(record.value(MSG_DB_DCREATED_INDEX).value<qint64>());
   message.m_contents = record.value(MSG_DB_CONTENTS_INDEX).toString();
   message.m_enclosures = Enclosures::decodeEnclosuresFromString(record.value(MSG_DB_ENCLOSURES_INDEX).toString());
+  message.m_score = record.value(MSG_DB_SCORE_INDEX).toDouble();
   message.m_accountId = record.value(MSG_DB_ACCOUNT_ID_INDEX).toInt();
   message.m_customId = record.value(MSG_DB_CUSTOM_ID_INDEX).toString();
   message.m_customHash = record.value(MSG_DB_CUSTOM_HASH_INDEX).toString();
@@ -125,31 +127,34 @@ QDataStream& operator<<(QDataStream& out, const Message& my_obj) {
       << my_obj.m_id
       << my_obj.m_isImportant
       << my_obj.m_isRead
-      << my_obj.m_isDeleted;
+      << my_obj.m_isDeleted
+      << my_obj.m_score;
 
   return out;
 }
 
 QDataStream& operator>>(QDataStream& in, Message& my_obj) {
-  int accountId;
-  QString customHash;
-  QString customId;
-  QString feedId;
+  int account_id;
+  QString custom_hash;
+  QString custom_id;
+  QString feed_id;
   int id;
-  bool isImportant;
-  bool isRead;
-  bool isDeleted;
+  bool is_important;
+  bool is_read;
+  bool is_deleted;
+  double score;
 
-  in >> accountId >> customHash >> customId >> feedId >> id >> isImportant >> isRead >> isDeleted;
+  in >> account_id >> custom_hash >> custom_id >> feed_id >> id >> is_important >> is_read >> is_deleted >> score;
 
-  my_obj.m_accountId = accountId;
-  my_obj.m_customHash = customHash;
-  my_obj.m_customId = customId;
-  my_obj.m_feedId = feedId;
+  my_obj.m_accountId = account_id;
+  my_obj.m_customHash = custom_hash;
+  my_obj.m_customId = custom_id;
+  my_obj.m_feedId = feed_id;
   my_obj.m_id = id;
-  my_obj.m_isImportant = isImportant;
-  my_obj.m_isRead = isRead;
-  my_obj.m_isDeleted = isDeleted;
+  my_obj.m_isImportant = is_important;
+  my_obj.m_isRead = is_read;
+  my_obj.m_isDeleted = is_deleted;
+  my_obj.m_score = score;
 
   return in;
 }
diff --git a/src/librssguard/core/message.h b/src/librssguard/core/message.h
index 340a50ced..1a9a55674 100644
--- a/src/librssguard/core/message.h
+++ b/src/librssguard/core/message.h
@@ -54,6 +54,7 @@ class RSSGUARD_DLLSPEC Message {
     bool m_isRead;
     bool m_isImportant;
     bool m_isDeleted;
+    double m_score;
     QList<Enclosure> m_enclosures;
 
     // List of custom IDs of labels assigned to this message.
diff --git a/src/librssguard/core/messageobject.cpp b/src/librssguard/core/messageobject.cpp
index 2c8273a53..4c6f7e45d 100755
--- a/src/librssguard/core/messageobject.cpp
+++ b/src/librssguard/core/messageobject.cpp
@@ -183,6 +183,14 @@ void MessageObject::setIsDeleted(bool is_deleted) {
   m_message->m_isDeleted = is_deleted;
 }
 
+double MessageObject::score() const {
+  return m_message->m_score;
+}
+
+void MessageObject::setScore(double score) {
+  m_message->m_score = score;
+}
+
 QString MessageObject::feedCustomId() const {
   if (m_feedCustomId.isEmpty() || m_feedCustomId == QString::number(NO_PARENT_CATEGORY)) {
     return m_message->m_feedId;
diff --git a/src/librssguard/core/messageobject.h b/src/librssguard/core/messageobject.h
index 45b46c8a1..26ec8e3e0 100755
--- a/src/librssguard/core/messageobject.h
+++ b/src/librssguard/core/messageobject.h
@@ -19,6 +19,7 @@ class MessageObject : public QObject {
   Q_PROPERTY(QString author READ author WRITE setAuthor)
   Q_PROPERTY(QString contents READ contents WRITE setContents)
   Q_PROPERTY(QDateTime created READ created WRITE setCreated)
+  Q_PROPERTY(double score READ score WRITE setScore)
   Q_PROPERTY(bool isRead READ isRead WRITE setIsRead)
   Q_PROPERTY(bool isImportant READ isImportant WRITE setIsImportant)
   Q_PROPERTY(bool isDeleted READ isDeleted WRITE setIsDeleted)
@@ -112,6 +113,9 @@ class MessageObject : public QObject {
     bool isDeleted() const;
     void setIsDeleted(bool is_deleted);
 
+    double score() const;
+    void setScore(double score);
+
   private:
     QSqlDatabase* m_db;
     QString m_feedCustomId;
diff --git a/src/librssguard/core/messagesmodel.cpp b/src/librssguard/core/messagesmodel.cpp
index 2e50c7754..65fad1fa7 100644
--- a/src/librssguard/core/messagesmodel.cpp
+++ b/src/librssguard/core/messagesmodel.cpp
@@ -197,6 +197,8 @@ void MessagesModel::setupHeaderData() {
 
     /*: Tooltip for attachments of message.*/ tr("Attachments") <<
 
+    /*: Tooltip for score of message.*/ tr("Score") <<
+
     /*: Tooltip for account ID of message.*/ tr("Account ID") <<
 
     /*: Tooltip for custom ID of message.*/ tr("Custom ID") <<
diff --git a/src/librssguard/core/messagesmodelsqllayer.cpp b/src/librssguard/core/messagesmodelsqllayer.cpp
index ad192d529..52dad1633 100644
--- a/src/librssguard/core/messagesmodelsqllayer.cpp
+++ b/src/librssguard/core/messagesmodelsqllayer.cpp
@@ -23,6 +23,7 @@ MessagesModelSqlLayer::MessagesModelSqlLayer()
   m_fieldNames[MSG_DB_DCREATED_INDEX] = "Messages.date_created";
   m_fieldNames[MSG_DB_CONTENTS_INDEX] = "Messages.contents";
   m_fieldNames[MSG_DB_ENCLOSURES_INDEX] = "Messages.enclosures";
+  m_fieldNames[MSG_DB_SCORE_INDEX] = "Messages.score";
   m_fieldNames[MSG_DB_ACCOUNT_ID_INDEX] = "Messages.account_id";
   m_fieldNames[MSG_DB_CUSTOM_ID_INDEX] = "Messages.custom_id";
   m_fieldNames[MSG_DB_CUSTOM_HASH_INDEX] = "Messages.custom_hash";
@@ -42,6 +43,7 @@ MessagesModelSqlLayer::MessagesModelSqlLayer()
   m_orderByNames[MSG_DB_DCREATED_INDEX] = "Messages.date_created";
   m_orderByNames[MSG_DB_CONTENTS_INDEX] = "Messages.contents";
   m_orderByNames[MSG_DB_ENCLOSURES_INDEX] = "Messages.enclosures";
+  m_orderByNames[MSG_DB_SCORE_INDEX] = "Messages.score";
   m_orderByNames[MSG_DB_ACCOUNT_ID_INDEX] = "Messages.account_id";
   m_orderByNames[MSG_DB_CUSTOM_ID_INDEX] = "Messages.custom_id";
   m_orderByNames[MSG_DB_CUSTOM_HASH_INDEX] = "Messages.custom_hash";
@@ -49,7 +51,8 @@ MessagesModelSqlLayer::MessagesModelSqlLayer()
   m_orderByNames[MSG_DB_HAS_ENCLOSURES] = "has_enclosures";
 
   m_numericColumns << MSG_DB_ID_INDEX << MSG_DB_READ_INDEX << MSG_DB_DELETED_INDEX << MSG_DB_PDELETED_INDEX
-                   << MSG_DB_IMPORTANT_INDEX << MSG_DB_ACCOUNT_ID_INDEX << MSG_DB_DCREATED_INDEX;
+                   << MSG_DB_IMPORTANT_INDEX << MSG_DB_ACCOUNT_ID_INDEX << MSG_DB_DCREATED_INDEX
+                   << MSG_DB_SCORE_INDEX;
 }
 
 void MessagesModelSqlLayer::addSortState(int column, Qt::SortOrder order) {
diff --git a/src/librssguard/definitions/definitions.h b/src/librssguard/definitions/definitions.h
index 183832620..a6dc3cebb 100755
--- a/src/librssguard/definitions/definitions.h
+++ b/src/librssguard/definitions/definitions.h
@@ -186,11 +186,12 @@
 #define MSG_DB_DCREATED_INDEX           9
 #define MSG_DB_CONTENTS_INDEX           10
 #define MSG_DB_ENCLOSURES_INDEX         11
-#define MSG_DB_ACCOUNT_ID_INDEX         12
-#define MSG_DB_CUSTOM_ID_INDEX          13
-#define MSG_DB_CUSTOM_HASH_INDEX        14
-#define MSG_DB_FEED_TITLE_INDEX         15
-#define MSG_DB_HAS_ENCLOSURES           16
+#define MSG_DB_SCORE_INDEX              12
+#define MSG_DB_ACCOUNT_ID_INDEX         13
+#define MSG_DB_CUSTOM_ID_INDEX          14
+#define MSG_DB_CUSTOM_HASH_INDEX        15
+#define MSG_DB_FEED_TITLE_INDEX         16
+#define MSG_DB_HAS_ENCLOSURES           17
 
 // Indexes of columns as they are DEFINED IN THE TABLE for CATEGORIES.
 #define CAT_DB_ID_INDEX           0
diff --git a/src/librssguard/gui/messagesview.cpp b/src/librssguard/gui/messagesview.cpp
index faf61038f..5359ab7e8 100644
--- a/src/librssguard/gui/messagesview.cpp
+++ b/src/librssguard/gui/messagesview.cpp
@@ -629,6 +629,7 @@ void MessagesView::adjustColumns() {
     hideColumn(MSG_DB_CONTENTS_INDEX);
     hideColumn(MSG_DB_PDELETED_INDEX);
     hideColumn(MSG_DB_ENCLOSURES_INDEX);
+    hideColumn(MSG_DB_SCORE_INDEX);
     hideColumn(MSG_DB_ACCOUNT_ID_INDEX);
     hideColumn(MSG_DB_CUSTOM_ID_INDEX);
     hideColumn(MSG_DB_CUSTOM_HASH_INDEX);
diff --git a/src/librssguard/miscellaneous/databasequeries.cpp b/src/librssguard/miscellaneous/databasequeries.cpp
index 9dd5e9968..5ccf76e35 100755
--- a/src/librssguard/miscellaneous/databasequeries.cpp
+++ b/src/librssguard/miscellaneous/databasequeries.cpp
@@ -910,13 +910,13 @@ int DatabaseQueries::updateMessages(QSqlDatabase db,
   // Used to insert new messages.
   query_insert.setForwardOnly(true);
   query_insert.prepare("INSERT INTO Messages "
-                       "(feed, title, is_read, is_important, is_deleted, url, author, date_created, contents, enclosures, custom_id, custom_hash, account_id) "
-                       "VALUES (:feed, :title, :is_read, :is_important, :is_deleted, :url, :author, :date_created, :contents, :enclosures, :custom_id, :custom_hash, :account_id);");
+                       "(feed, title, is_read, is_important, is_deleted, url, author, score, date_created, contents, enclosures, custom_id, custom_hash, account_id) "
+                       "VALUES (:feed, :title, :is_read, :is_important, :is_deleted, :url, :author, :score, :date_created, :contents, :enclosures, :custom_id, :custom_hash, :account_id);");
 
   // Used to update existing messages.
   query_update.setForwardOnly(true);
   query_update.prepare("UPDATE Messages "
-                       "SET title = :title, is_read = :is_read, is_important = :is_important, is_deleted = :is_deleted, url = :url, author = :author, date_created = :date_created, contents = :contents, enclosures = :enclosures, feed = :feed "
+                       "SET title = :title, is_read = :is_read, is_important = :is_important, is_deleted = :is_deleted, url = :url, author = :author, score = :score, date_created = :date_created, contents = :contents, enclosures = :enclosures, feed = :feed "
                        "WHERE id = :id;");
 
   if (use_transactions && !query_begin_transaction.exec(qApp->database()->obtainBeginTransactionSql())) {
@@ -1091,6 +1091,7 @@ int DatabaseQueries::updateMessages(QSqlDatabase db,
         query_update.bindValue(QSL(":contents"), unnulifyString(message.m_contents));
         query_update.bindValue(QSL(":enclosures"), Enclosures::encodeEnclosuresToString(message.m_enclosures));
         query_update.bindValue(QSL(":feed"), unnulifyString(feed_id_existing_message));
+        query_update.bindValue(QSL(":score"), message.m_score);
         query_update.bindValue(QSL(":id"), id_existing_message);
 
         *any_message_changed = true;
@@ -1129,6 +1130,7 @@ int DatabaseQueries::updateMessages(QSqlDatabase db,
       query_insert.bindValue(QSL(":enclosures"), Enclosures::encodeEnclosuresToString(message.m_enclosures));
       query_insert.bindValue(QSL(":custom_id"), unnulifyString(message.m_customId));
       query_insert.bindValue(QSL(":custom_hash"), unnulifyString(message.m_customHash));
+      query_insert.bindValue(QSL(":score"), message.m_score);
       query_insert.bindValue(QSL(":account_id"), account_id);
 
       if (query_insert.exec() && query_insert.numRowsAffected() == 1) {
@@ -1673,6 +1675,10 @@ void DatabaseQueries::createOverwriteFeed(const QSqlDatabase& db, Feed* feed, in
     }
     else {
       feed->setId(q.lastInsertId().toInt());
+
+      if (feed->customId().isEmpty()) {
+        feed->setCustomId(QString::number(feed->id()));
+      }
     }
   }
 
@@ -1691,7 +1697,7 @@ void DatabaseQueries::createOverwriteFeed(const QSqlDatabase& db, Feed* feed, in
   q.bindValue(QSL(":update_type"), int(feed->autoUpdateType()));
   q.bindValue(QSL(":update_interval"), feed->autoUpdateInitialInterval());
   q.bindValue(QSL(":account_id"), account_id);
-  q.bindValue(QSL(":custom_id"), feed->customId().isEmpty() ? QString::number(feed->id()) : feed->customId());
+  q.bindValue(QSL(":custom_id"), feed->customId());
   q.bindValue(QSL(":id"), feed->id());
 
   auto custom_data = feed->customDatabaseData();
diff --git a/src/librssguard/services/abstract/rootitem.cpp b/src/librssguard/services/abstract/rootitem.cpp
index 93e2b48f3..dfa4c0df3 100644
--- a/src/librssguard/services/abstract/rootitem.cpp
+++ b/src/librssguard/services/abstract/rootitem.cpp
@@ -22,6 +22,7 @@ RootItem::RootItem(const RootItem& other) : RootItem(nullptr) {
   setId(other.id());
   setCustomId(other.customId());
   setIcon(other.icon());
+  setKeepOnTop(other.keepOnTop());
 
   // NOTE: We do not need to clone childs, because that would mean that
   // either source or target item tree would get corrupted.
diff --git a/src/librssguard/services/gmail/gmailserviceroot.cpp b/src/librssguard/services/gmail/gmailserviceroot.cpp
index 6ff022345..ff3750f65 100644
--- a/src/librssguard/services/gmail/gmailserviceroot.cpp
+++ b/src/librssguard/services/gmail/gmailserviceroot.cpp
@@ -83,8 +83,6 @@ QList<Message> GmailServiceRoot::obtainNewMessages(const QList<Feed*>& feeds, bo
     if (error == Feed::Status::NetworkError || error == Feed::Status::AuthError || error == Feed::Status::ParsingError) {
       *error_during_obtaining = true;
     }
-
-    return messages;
   }
 
   return messages;
diff --git a/src/librssguard/services/standard/standardserviceroot.cpp b/src/librssguard/services/standard/standardserviceroot.cpp
index c2b75c048..63b913a7a 100644
--- a/src/librssguard/services/standard/standardserviceroot.cpp
+++ b/src/librssguard/services/standard/standardserviceroot.cpp
@@ -352,6 +352,9 @@ bool StandardServiceRoot::mergeImportExportModel(FeedsImportExportModel* model,
                                                    target_root_node->getParentServiceRoot()->accountId(),
                                                    target_parent->id());
           requestItemReassignment(new_category, target_parent);
+
+          original_parents.push(new_category);
+          new_parents.push(source_category);
         }
         catch (ApplicationException& ex) {
           // Add category failed, but this can mean that the same category (with same title)