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diff --git a/src/main/java/com/juick/service/SubscriptionServiceImpl.java b/src/main/java/com/juick/service/SubscriptionServiceImpl.java
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+++ b/src/main/java/com/juick/service/SubscriptionServiceImpl.java
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+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import com.juick.Message;
+import com.juick.Tag;
+import com.juick.User;
+import com.juick.model.NotifyOpts;
+import com.juick.util.MessageUtils;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.collections4.IteratorUtils;
+import org.apache.commons.collections4.ListUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.dao.DuplicateKeyException;
+import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.annotation.Nonnull;
+import javax.inject.Inject;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Created by aalexeev on 11/13/16.
+ */
+@Repository
+public class SubscriptionServiceImpl extends BaseJdbcService implements SubscriptionService {
+    @Inject
+    private UserService userService;
+    @Inject
+    private MessagesService messagesService;
+    @Inject
+    private TagService tagService;
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<User> getSubscribedUsers(final int uid, final Message msg) {
+        int mid = msg.getMid();
+        User author = messagesService.getMessageAuthor(mid);
+
+        List<User> subscribers = userService.getUserReaders(uid);
+        List<User> mentionedUsers = userService.getUsersByName(MessageUtils.getMentions(msg).stream()
+                .map(u -> u.substring(1)).collect(Collectors.toList()));
+        List<User> users = ListUtils.union(subscribers, mentionedUsers);
+        List<Integer> tags = tagService.getMessageTagsIDs(mid);
+        List<String> tagsStr = tagService.getMessageTags(mid).stream().map(t -> t.getTag().getName()).collect(Collectors.toList());
+
+        Set<Integer> set = new HashSet<>();
+        set.addAll(
+                users.stream()
+                        .map(User::getUid).filter(u -> Collections.disjoint(tagService.getUserBLTags(u), tagsStr))
+                        .collect(Collectors.toList()));
+
+
+        if (!tags.isEmpty()) {
+            List<Integer> tagUsers = getNamedParameterJdbcTemplate().queryForList(
+                    "SELECT st.suser_id FROM subscr_tags st " +
+                            "WHERE st.tag_id IN (:ids) AND st.suser_id != :uid " +
+                            " AND NOT EXISTS (SELECT 1 FROM bl_users bu WHERE bu.bl_user_id = :authorUid and st.suser_id = bu.user_id)" +
+                            " AND NOT EXISTS (SELECT 1 FROM bl_tags bt WHERE bt.tag_id IN (:ids) and st.suser_id = bt.user_id)",
+                    new MapSqlParameterSource()
+                            .addValue("ids", tags)
+                            .addValue("uid", uid)
+                            .addValue("authorUid", author.getUid()),
+                    Integer.class);
+            set.addAll(tagUsers);
+        }
+        return userService.getUsersByID(set);
+    }
+    @Override
+    public List<User> getUsersSubscribedToComments(@Nonnull final Message msg, @Nonnull final Message reply) {
+        return getUsersSubscribedToComments(msg, reply, false);
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<User> getUsersSubscribedToComments(@Nonnull final Message msg, @Nonnull final Message reply,
+                                                   boolean blacklisted) {
+        List<User> subscribers = userService.getUsersByID(getJdbcTemplate().queryForList(
+                "SELECT suser_id FROM subscr_messages WHERE message_id=? AND suser_id!=?",
+                Integer.class,
+                msg.getMid(), reply.getUser().getUid()));
+        List<User> mentionedUsers = userService.getUsersByName(MessageUtils.getMentions(reply).stream()
+                .map(u -> u.substring(1)).collect(Collectors.toList()));
+        List<User> users = IteratorUtils.toList(CollectionUtils.union(subscribers, mentionedUsers).iterator());
+        if (!users.isEmpty()) {
+            return users.stream()
+                    .filter(u -> blacklisted ||  !userService.isReplyToBL(u, reply))
+                    .collect(Collectors.toList());
+        }
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<User> getUsersSubscribedToUserRecommendations(final int uid, final Message msg) {
+        List<String> msgTags = tagService.getMessageTags(msg.getMid()).stream().map(t -> t.getTag().getName()).collect(Collectors.toList());
+        if (msg.getLikes() == 1) {
+            return userService.getUserReaders(uid).stream()
+                    .filter(u -> !u.equals(msg.getUser()))
+                    .filter(u -> !userService.isInBLAny(u.getUid(), msg.getUser().getUid()))
+                    .filter(u -> Collections.disjoint(tagService.getUserBLTags(u.getUid()), msgTags))
+                    .collect(Collectors.toList());
+        }
+        return Collections.emptyList();
+    }
+
+    @Transactional
+    @Override
+    public boolean subscribeMessage(final Message message, final User user) {
+        try {
+            boolean result = getJdbcTemplate().update(
+                    "INSERT INTO subscr_messages(suser_id, message_id) VALUES (?, ?)", user.getUid(), message.getMid()) == 1;
+            messagesService.setLastReadComment(user, message.getMid(), message.getReplies());
+            return result;
+        } catch (DuplicateKeyException e) {
+            return true;
+        }
+    }
+
+    @Transactional
+    @Override
+    public boolean unSubscribeMessage(final int mid, final int vuid) {
+        return getJdbcTemplate().update(
+                "DELETE FROM subscr_messages WHERE message_id=? AND suser_id=?", mid, vuid) > 0;
+    }
+
+    @Transactional
+    @Override
+    public boolean subscribeUser(final User user, final User toUser) {
+        try {
+            return getJdbcTemplate().update(
+                    "INSERT INTO subscr_users(user_id,suser_id) VALUES (?,?)", toUser.getUid(), user.getUid()) == 1;
+        } catch (DuplicateKeyException e) {
+            return true;
+        }
+    }
+
+    @Transactional
+    @Override
+    public boolean unSubscribeUser(final User user, final User fromUser) {
+        return getJdbcTemplate().update(
+                "DELETE FROM subscr_users WHERE suser_id=? AND user_id=?", user.getUid(), fromUser.getUid()) > 0;
+    }
+
+    @Transactional
+    @Override
+    public boolean subscribeTag(final User user, final Tag toTag) {
+        try {
+
+            return getJdbcTemplate().update(
+                    "INSERT INTO subscr_tags(tag_id,suser_id) VALUES (?,?)", toTag.TID, user.getUid()) == 1;
+        } catch (DuplicateKeyException e) {
+            return true;
+        }
+    }
+
+    @Transactional
+    @Override
+    public boolean unSubscribeTag(final User user, final Tag toTag) {
+        return getJdbcTemplate().update(
+                "DELETE FROM subscr_tags WHERE tag_id=? AND suser_id=?", toTag.TID, user.getUid()) > 0;
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<String> getSubscribedTags(User user) {
+        return getJdbcTemplate().queryForList("SELECT tags.name FROM subscr_tags INNER JOIN tags " +
+                "ON(tags.tag_id = subscr_tags.tag_id) " +
+                "WHERE subscr_tags.suser_id=? ORDER BY tags.name", String.class, user.getUid());
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public NotifyOpts getNotifyOptions(final User user) {
+        List<NotifyOpts> list = getJdbcTemplate().query(
+                "SELECT jnotify,subscr_notify,recommendations FROM useroptions WHERE user_id=?",
+                (rs, num) -> {
+                    NotifyOpts options = new NotifyOpts();
+                    options.setRepliesEnabled(rs.getInt(1) > 0);
+                    options.setSubscriptionsEnabled(rs.getInt(2) > 0);
+                    options.setRecommendationsEnabled(rs.getInt(3) > 0);
+                    return options;
+                },
+                user.getUid());
+
+        return list.isEmpty() ?
+                new NotifyOpts() : list.get(0);
+    }
+
+    @Transactional
+    @Override
+    public boolean setNotifyOptions(final User user, final NotifyOpts options) {
+        int jnotify = getJdbcTemplate().update(
+                "UPDATE useroptions SET jnotify=? WHERE user_id=?",
+                options.isRepliesEnabled() ? 1 : 0,
+                user.getUid());
+
+        int subscr_notify = getJdbcTemplate().update(
+                "UPDATE useroptions SET subscr_notify=? WHERE user_id=?",
+                options.isSubscriptionsEnabled() ? 1 : 0,
+                user.getUid());
+
+        int recommendations = getJdbcTemplate().update(
+                "UPDATE useroptions SET recommendations=? WHERE user_id=?",
+                options.isRecommendationsEnabled() ? 1 : 0,
+                user.getUid());
+
+        return jnotify > 0 && subscr_notify > 0 && recommendations > 0;
+    }
+}