diff --git a/app/javascript/flavours/glitch/components/status_reactions.jsx b/app/javascript/flavours/glitch/components/status_reactions.jsx
new file mode 100644
index 0000000000..1ee8a0a028
--- /dev/null
+++ b/app/javascript/flavours/glitch/components/status_reactions.jsx
@@ -0,0 +1,170 @@
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { autoPlayGif, reduceMotion } from '../initial_state';
+import spring from 'react-motion/lib/spring';
+import TransitionMotion from 'react-motion/lib/TransitionMotion';
+import classNames from 'classnames';
+import React from 'react';
+import unicodeMapping from '../features/emoji/emoji_unicode_mapping_light';
+import { AnimatedNumber } from './animated_number';
+import { assetHost } from '../utils/config';
+
+export default class StatusReactions extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string.isRequired,
+    reactions: ImmutablePropTypes.list.isRequired,
+    numVisible: PropTypes.number,
+    addReaction: PropTypes.func.isRequired,
+    canReact: PropTypes.bool.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+  };
+
+  willEnter() {
+    return { scale: reduceMotion ? 1 : 0 };
+  }
+
+  willLeave() {
+    return { scale: reduceMotion ? 0 : spring(0, { stiffness: 170, damping: 26 }) };
+  }
+
+  render() {
+    const { reactions, numVisible } = this.props;
+    let visibleReactions = reactions
+      .filter(x => x.get('count') > 0)
+      .sort((a, b) => b.get('count') - a.get('count'));
+
+    if (numVisible >= 0) {
+      visibleReactions = visibleReactions.filter((_, i) => i < numVisible);
+    }
+
+    const styles = visibleReactions.map(reaction => ({
+      key: reaction.get('name'),
+      data: reaction,
+      style: { scale: reduceMotion ? 1 : spring(1, { stiffness: 150, damping: 13 }) },
+    })).toArray();
+
+    return (
+      <TransitionMotion styles={styles} willEnter={this.willEnter} willLeave={this.willLeave}>
+        {items => (
+          <div className={classNames('reactions-bar', { 'reactions-bar--empty': visibleReactions.isEmpty() })}>
+            {items.map(({ key, data, style }) => (
+              <Reaction
+                key={key}
+                statusId={this.props.statusId}
+                reaction={data}
+                style={{ transform: `scale(${style.scale})`, position: style.scale < 0.5 ? 'absolute' : 'static' }}
+                addReaction={this.props.addReaction}
+                removeReaction={this.props.removeReaction}
+                canReact={this.props.canReact}
+              />
+            ))}
+          </div>
+        )}
+      </TransitionMotion>
+    );
+  }
+
+}
+
+class Reaction extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string,
+    reaction: ImmutablePropTypes.map.isRequired,
+    addReaction: PropTypes.func.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+    canReact: PropTypes.bool.isRequired,
+    style: PropTypes.object,
+  };
+
+  state = {
+    hovered: false,
+  };
+
+  handleClick = () => {
+    const { reaction, statusId, addReaction, removeReaction } = this.props;
+
+    if (reaction.get('me')) {
+      removeReaction(statusId, reaction.get('name'));
+    } else {
+      addReaction(statusId, reaction.get('name'));
+    }
+  }
+
+  handleMouseEnter = () => this.setState({ hovered: true })
+
+  handleMouseLeave = () => this.setState({ hovered: false })
+
+  render() {
+    const { reaction } = this.props;
+
+    return (
+      <button
+        className={classNames('reactions-bar__item', { active: reaction.get('me') })}
+        onClick={this.handleClick}
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+        disabled={!this.props.canReact}
+        style={this.props.style}
+      >
+        <span className='reactions-bar__item__emoji'>
+          <Emoji
+            hovered={this.state.hovered}
+            emoji={reaction.get('name')}
+            url={reaction.get('url')}
+            staticUrl={reaction.get('static_url')}
+          />
+        </span>
+        <span className='reactions-bar__item__count'>
+          <AnimatedNumber value={reaction.get('count')} />
+        </span>
+      </button>
+    );
+  }
+
+}
+
+class Emoji extends React.PureComponent {
+
+  static propTypes = {
+    emoji: PropTypes.string.isRequired,
+    hovered: PropTypes.bool.isRequired,
+    url: PropTypes.string,
+    staticUrl: PropTypes.string,
+  };
+
+  render() {
+    const { emoji, hovered, url, staticUrl } = this.props;
+
+    if (unicodeMapping[emoji]) {
+      const { filename, shortCode } = unicodeMapping[this.props.emoji];
+      const title = shortCode ? `:${shortCode}:` : '';
+
+      return (
+        <img
+          draggable='false'
+          className='emojione'
+          alt={emoji}
+          title={title}
+          src={`${assetHost}/emoji/${filename}.svg`}
+        />
+      );
+    } else {
+      const filename = (autoPlayGif || hovered) ? url : staticUrl;
+      const shortCode = `:${emoji}:`;
+
+      return (
+        <img
+          draggable='false'
+          className='emojione custom-emoji'
+          alt={shortCode}
+          title={shortCode}
+          src={filename}
+        />
+      );
+    }
+  }
+
+}
diff --git a/app/javascript/flavours/glitch/locales/defaultMessages.json b/app/javascript/flavours/glitch/locales/defaultMessages.json
index bf21fdef2d..8feefa4a49 100644
--- a/app/javascript/flavours/glitch/locales/defaultMessages.json
+++ b/app/javascript/flavours/glitch/locales/defaultMessages.json
@@ -78,6 +78,15 @@
     ],
     "path": "app/javascript/flavours/glitch/components/notification_purge_buttons.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "React",
+        "id": "status.react"
+      }
+    ],
+    "path": "app/javascript/flavours/glitch/components/status_action_bar.json"
+  },
   {
     "descriptors": [
       {
@@ -119,6 +128,15 @@
     ],
     "path": "app/javascript/flavours/glitch/components/status_icons.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "{name} reacted to your status",
+        "id": "notification.reaction"
+      }
+    ],
+    "path": "app/javascript/flavours/glitch/components/status_prepend.json"
+  },
   {
     "descriptors": [
       {
@@ -903,6 +921,24 @@
     ],
     "path": "app/javascript/flavours/glitch/features/local_settings/page/index.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Reactions:",
+        "id": "notifications.column_settings.reaction"
+      }
+    ],
+    "path": "app/javascript/flavours/glitch/features/notifications/components/column_settings.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Reactions",
+        "id": "notifications.filter.reactions"
+      }
+    ],
+    "path": "app/javascript/flavours/glitch/features/notifications/components/filter_bar.json"
+  },
   {
     "descriptors": [
       {
@@ -956,6 +992,15 @@
     ],
     "path": "app/javascript/flavours/glitch/features/reblogs/index.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "React",
+        "id": "status.react"
+      }
+    ],
+    "path": "app/javascript/flavours/glitch/features/status/components/action_bar.json"
+  },
   {
     "descriptors": [
       {
@@ -1110,5 +1155,50 @@
       }
     ],
     "path": "app/javascript/flavours/glitch/features/ui/index.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "React",
+        "id": "status.react"
+      }
+    ],
+    "path": "app/javascript/mastodon/components/status_action_bar.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Reactions:",
+        "id": "notifications.column_settings.reaction"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/notifications/components/column_settings.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Reactions",
+        "id": "notifications.filter.reactions"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/notifications/components/filter_bar.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "{name} reacted to your status",
+        "id": "notification.reaction"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/notifications/components/notification.json"
+  },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "React",
+        "id": "status.react"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/status/components/action_bar.json"
   }
 ]
\ No newline at end of file
diff --git a/app/javascript/flavours/glitch/locales/en.json b/app/javascript/flavours/glitch/locales/en.json
index 6d16f23efe..dd4e5c0fb0 100644
--- a/app/javascript/flavours/glitch/locales/en.json
+++ b/app/javascript/flavours/glitch/locales/en.json
@@ -76,12 +76,13 @@
   "navigation_bar.misc": "Misc",
   "notification.markForDeletion": "Mark for deletion",
   "notification.reaction": "{name} reacted to your post",
-  "notifications.column_settings.reaction": "Reactions:",
   "notification_purge.btn_all": "Select\nall",
   "notification_purge.btn_apply": "Clear\nselected",
   "notification_purge.btn_invert": "Invert\nselection",
   "notification_purge.btn_none": "Select\nnone",
   "notification_purge.start": "Enter notification cleaning mode",
+  "notifications.column_settings.reaction": "Reactions:",
+  "notifications.filter.reactions": "Reactions",
   "notifications.marked_clear": "Clear selected notifications",
   "notifications.marked_clear_confirmation": "Are you sure you want to permanently clear all selected notifications?",
   "onboarding.done": "Done",
@@ -201,6 +202,7 @@
   "status.in_reply_to": "This toot is a reply",
   "status.is_poll": "This toot is a poll",
   "status.local_only": "Only visible from your instance",
+  "status.react": "React",
   "status.sensitive_toggle": "Click to view",
   "status.uncollapse": "Uncollapse",
   "web_app_crash.change_your_settings": "Change your {settings}",
diff --git a/app/javascript/mastodon/components/status_reactions.jsx b/app/javascript/mastodon/components/status_reactions.jsx
new file mode 100644
index 0000000000..1ee8a0a028
--- /dev/null
+++ b/app/javascript/mastodon/components/status_reactions.jsx
@@ -0,0 +1,170 @@
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { autoPlayGif, reduceMotion } from '../initial_state';
+import spring from 'react-motion/lib/spring';
+import TransitionMotion from 'react-motion/lib/TransitionMotion';
+import classNames from 'classnames';
+import React from 'react';
+import unicodeMapping from '../features/emoji/emoji_unicode_mapping_light';
+import { AnimatedNumber } from './animated_number';
+import { assetHost } from '../utils/config';
+
+export default class StatusReactions extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string.isRequired,
+    reactions: ImmutablePropTypes.list.isRequired,
+    numVisible: PropTypes.number,
+    addReaction: PropTypes.func.isRequired,
+    canReact: PropTypes.bool.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+  };
+
+  willEnter() {
+    return { scale: reduceMotion ? 1 : 0 };
+  }
+
+  willLeave() {
+    return { scale: reduceMotion ? 0 : spring(0, { stiffness: 170, damping: 26 }) };
+  }
+
+  render() {
+    const { reactions, numVisible } = this.props;
+    let visibleReactions = reactions
+      .filter(x => x.get('count') > 0)
+      .sort((a, b) => b.get('count') - a.get('count'));
+
+    if (numVisible >= 0) {
+      visibleReactions = visibleReactions.filter((_, i) => i < numVisible);
+    }
+
+    const styles = visibleReactions.map(reaction => ({
+      key: reaction.get('name'),
+      data: reaction,
+      style: { scale: reduceMotion ? 1 : spring(1, { stiffness: 150, damping: 13 }) },
+    })).toArray();
+
+    return (
+      <TransitionMotion styles={styles} willEnter={this.willEnter} willLeave={this.willLeave}>
+        {items => (
+          <div className={classNames('reactions-bar', { 'reactions-bar--empty': visibleReactions.isEmpty() })}>
+            {items.map(({ key, data, style }) => (
+              <Reaction
+                key={key}
+                statusId={this.props.statusId}
+                reaction={data}
+                style={{ transform: `scale(${style.scale})`, position: style.scale < 0.5 ? 'absolute' : 'static' }}
+                addReaction={this.props.addReaction}
+                removeReaction={this.props.removeReaction}
+                canReact={this.props.canReact}
+              />
+            ))}
+          </div>
+        )}
+      </TransitionMotion>
+    );
+  }
+
+}
+
+class Reaction extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string,
+    reaction: ImmutablePropTypes.map.isRequired,
+    addReaction: PropTypes.func.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+    canReact: PropTypes.bool.isRequired,
+    style: PropTypes.object,
+  };
+
+  state = {
+    hovered: false,
+  };
+
+  handleClick = () => {
+    const { reaction, statusId, addReaction, removeReaction } = this.props;
+
+    if (reaction.get('me')) {
+      removeReaction(statusId, reaction.get('name'));
+    } else {
+      addReaction(statusId, reaction.get('name'));
+    }
+  }
+
+  handleMouseEnter = () => this.setState({ hovered: true })
+
+  handleMouseLeave = () => this.setState({ hovered: false })
+
+  render() {
+    const { reaction } = this.props;
+
+    return (
+      <button
+        className={classNames('reactions-bar__item', { active: reaction.get('me') })}
+        onClick={this.handleClick}
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+        disabled={!this.props.canReact}
+        style={this.props.style}
+      >
+        <span className='reactions-bar__item__emoji'>
+          <Emoji
+            hovered={this.state.hovered}
+            emoji={reaction.get('name')}
+            url={reaction.get('url')}
+            staticUrl={reaction.get('static_url')}
+          />
+        </span>
+        <span className='reactions-bar__item__count'>
+          <AnimatedNumber value={reaction.get('count')} />
+        </span>
+      </button>
+    );
+  }
+
+}
+
+class Emoji extends React.PureComponent {
+
+  static propTypes = {
+    emoji: PropTypes.string.isRequired,
+    hovered: PropTypes.bool.isRequired,
+    url: PropTypes.string,
+    staticUrl: PropTypes.string,
+  };
+
+  render() {
+    const { emoji, hovered, url, staticUrl } = this.props;
+
+    if (unicodeMapping[emoji]) {
+      const { filename, shortCode } = unicodeMapping[this.props.emoji];
+      const title = shortCode ? `:${shortCode}:` : '';
+
+      return (
+        <img
+          draggable='false'
+          className='emojione'
+          alt={emoji}
+          title={title}
+          src={`${assetHost}/emoji/${filename}.svg`}
+        />
+      );
+    } else {
+      const filename = (autoPlayGif || hovered) ? url : staticUrl;
+      const shortCode = `:${emoji}:`;
+
+      return (
+        <img
+          draggable='false'
+          className='emojione custom-emoji'
+          alt={shortCode}
+          title={shortCode}
+          src={filename}
+        />
+      );
+    }
+  }
+
+}
diff --git a/app/lib/activitypub/activity.rb b/app/lib/activitypub/activity.rb
index 00d724a282..572ad907e2 100644
--- a/app/lib/activitypub/activity.rb
+++ b/app/lib/activitypub/activity.rb
@@ -179,23 +179,20 @@ class ActivityPub::Activity
     nil
   end
 
-  # Ensure all emojis declared in the activity's tags are
+  # Ensure emoji declared in the activity's tags are
   # present in the database and downloaded to the local cache.
   # Required by EmojiReact and Like for emoji reactions.
-  def process_emoji_tags(tags)
-    as_array(tags).each do |tag|
-      process_single_emoji tag if tag['type'] == 'Emoji'
-    end
-  end
+  def process_emoji_tags(name, tags)
+    tag = as_array(tags).find { |item| item['type'] == 'Emoji' }
+    return if tag.nil?
 
-  def process_single_emoji(tag)
     custom_emoji_parser = ActivityPub::Parser::CustomEmojiParser.new(tag)
-    return if custom_emoji_parser.shortcode.blank? || custom_emoji_parser.image_remote_url.blank?
+    return if custom_emoji_parser.shortcode.blank? || custom_emoji_parser.image_remote_url.blank? || !name.eql?(custom_emoji_parser.shortcode)
 
     emoji = CustomEmoji.find_by(shortcode: custom_emoji_parser.shortcode, domain: @account.domain)
-    return unless emoji.nil? ||
-                  custom_emoji_parser.image_remote_url != emoji.image_remote_url ||
-                  (custom_emoji_parser.updated_at && custom_emoji_parser.updated_at >= emoji.updated_at)
+    return emoji unless emoji.nil? ||
+                        custom_emoji_parser.image_remote_url != emoji.image_remote_url ||
+                        (custom_emoji_parser.updated_at && custom_emoji_parser.updated_at >= emoji.updated_at)
 
     begin
       emoji ||= CustomEmoji.new(domain: @account.domain,
@@ -205,6 +202,8 @@ class ActivityPub::Activity
       emoji.save
     rescue Seahorse::Client::NetworkingError => e
       Rails.logger.warn "Error fetching emoji: #{e}"
+      return
     end
+    emoji
   end
 end
diff --git a/app/lib/activitypub/activity/emoji_react.rb b/app/lib/activitypub/activity/emoji_react.rb
index 526f22803d..c9d88bc51c 100644
--- a/app/lib/activitypub/activity/emoji_react.rb
+++ b/app/lib/activitypub/activity/emoji_react.rb
@@ -6,20 +6,21 @@ class ActivityPub::Activity::EmojiReact < ActivityPub::Activity
     name = @json['content']
     return if original_status.nil? ||
               !original_status.account.local? ||
-              delete_arrived_first?(@json['id']) ||
-              @account.reacted?(original_status, name)
+              delete_arrived_first?(@json['id'])
 
-    custom_emoji = nil
     if /^:.*:$/.match?(name)
-      process_emoji_tags(@json['tag'])
-
       name.delete! ':'
-      custom_emoji = CustomEmoji.find_by(shortcode: name, domain: @account.domain)
+      custom_emoji = process_emoji_tags(name, @json['tag'])
+
       return if custom_emoji.nil?
     end
 
+    return if @account.reacted?(original_status, name, custom_emoji)
+
     reaction = original_status.status_reactions.create!(account: @account, name: name, custom_emoji: custom_emoji)
 
     LocalNotificationWorker.perform_async(original_status.account_id, reaction.id, 'StatusReaction', 'reaction')
+  rescue ActiveRecord::RecordInvalid
+    nil
   end
 end
diff --git a/app/lib/activitypub/activity/like.rb b/app/lib/activitypub/activity/like.rb
index 8acc99b9db..86d70e0d70 100644
--- a/app/lib/activitypub/activity/like.rb
+++ b/app/lib/activitypub/activity/like.rb
@@ -5,7 +5,7 @@ class ActivityPub::Activity::Like < ActivityPub::Activity
     original_status = status_from_uri(object_uri)
     return if original_status.nil? || !original_status.account.local? || delete_arrived_first?(@json['id'])
 
-    return if maybe_process_misskey_reaction(original_status)
+    return if maybe_process_misskey_reaction
 
     return if @account.favourited?(original_status)
 
@@ -17,22 +17,24 @@ class ActivityPub::Activity::Like < ActivityPub::Activity
 
   # Misskey delivers reactions as likes with the emoji in _misskey_reaction
   # see https://misskey-hub.net/ns.html#misskey-reaction for details
-  def maybe_process_misskey_reaction(original_status)
+  def maybe_process_misskey_reaction
+    original_status = status_from_uri(object_uri)
     name = @json['_misskey_reaction']
     return false if name.nil?
 
-    custom_emoji = nil
     if /^:.*:$/.match?(name)
-      process_emoji_tags(@json['tag'])
-
       name.delete! ':'
-      custom_emoji = CustomEmoji.find_by(shortcode: name, domain: @account.domain)
+      custom_emoji = process_emoji_tags(name, @json['tag'])
+
       return false if custom_emoji.nil? # invalid custom emoji, treat it as a regular like
     end
-    return true if @account.reacted?(original_status, name)
+    return true if @account.reacted?(original_status, name, custom_emoji)
 
     reaction = original_status.status_reactions.create!(account: @account, name: name, custom_emoji: custom_emoji)
     LocalNotificationWorker.perform_async(original_status.account_id, reaction.id, 'StatusReaction', 'reaction')
     true
+  # account tried to react with disabled custom emoji. Returning true to discard activity.
+  rescue ActiveRecord::RecordInvalid
+    true
   end
 end
diff --git a/app/lib/activitypub/activity/undo.rb b/app/lib/activitypub/activity/undo.rb
index 54cda1947f..b453b4ddc8 100644
--- a/app/lib/activitypub/activity/undo.rb
+++ b/app/lib/activitypub/activity/undo.rb
@@ -110,6 +110,31 @@ class ActivityPub::Activity::Undo < ActivityPub::Activity
     if @account.favourited?(status)
       favourite = status.favourites.where(account: @account).first
       favourite&.destroy
+    elsif @object['_misskey_reaction'].present?
+      undo_emoji_react
+    else
+      delete_later!(object_uri)
+    end
+  end
+
+  def undo_emoji_react
+    name = @object['content'] || @object['_misskey_reaction']
+    return if name.nil?
+
+    status = status_from_uri(target_uri)
+
+    return if status.nil? || !status.account.local?
+
+    if /^:.*:$/.match?(name)
+      name.delete! ':'
+      custom_emoji = process_emoji_tags(name, @object['tag'])
+
+      return if custom_emoji.nil?
+    end
+
+    if @account.reacted?(status, name, custom_emoji)
+      reaction = status.status_reactions.where(account: @account, name: name).first
+      reaction&.destroy
     else
       delete_later!(object_uri)
     end
diff --git a/app/models/concerns/account_interactions.rb b/app/models/concerns/account_interactions.rb
index 89edd50ed2..e3d2449733 100644
--- a/app/models/concerns/account_interactions.rb
+++ b/app/models/concerns/account_interactions.rb
@@ -243,8 +243,8 @@ module AccountInteractions
     status.proper.favourites.where(account: self).exists?
   end
 
-  def reacted?(status, name)
-    status.proper.status_reactions.where(account: self, name: name).exists?
+  def reacted?(status, name, custom_emoji = nil)
+    status.proper.status_reactions.where(account: self, name: name, custom_emoji: custom_emoji).exists?
   end
 
   def bookmarked?(status)
diff --git a/app/models/status.rb b/app/models/status.rb
index a8d600ef1a..8a70fa7322 100644
--- a/app/models/status.rb
+++ b/app/models/status.rb
@@ -300,7 +300,7 @@ class Status < ApplicationRecord
       if account.nil?
         scope.select('name, custom_emoji_id, count(*) as count, false as me')
       else
-        scope.select("name, custom_emoji_id, count(*) as count, exists(select 1 from status_reactions r where r.account_id = #{account.id} and r.status_id = status_reactions.status_id and r.name = status_reactions.name) as me")
+        scope.select("name, custom_emoji_id, count(*) as count, exists(select 1 from status_reactions r where r.account_id = #{account.id} and r.status_id = status_reactions.status_id and r.name = status_reactions.name and (r.custom_emoji_id = status_reactions.custom_emoji_id or r.custom_emoji_id is null and status_reactions.custom_emoji_id is null)) as me")
       end
     end
 
diff --git a/app/models/status_reaction.rb b/app/models/status_reaction.rb
index a54d03a309..bc6eda2a1c 100644
--- a/app/models/status_reaction.rb
+++ b/app/models/status_reaction.rb
@@ -26,7 +26,8 @@ class StatusReaction < ApplicationRecord
 
   private
 
+  # Sets custom_emoji to nil when disabled
   def set_custom_emoji
-    self.custom_emoji = CustomEmoji.find_by(shortcode: name, domain: account.domain) if name.blank?
+    self.custom_emoji = CustomEmoji.find_by(disabled: false, shortcode: name, domain: custom_emoji.domain) if name.present? && custom_emoji.present?
   end
 end
diff --git a/app/services/react_service.rb b/app/services/react_service.rb
index 79d1eaaf30..de2fd1de9c 100644
--- a/app/services/react_service.rb
+++ b/app/services/react_service.rb
@@ -8,6 +8,8 @@ class ReactService < BaseService
     authorize_with account, status, :react?
 
     name, domain = emoji.split('@')
+    return unless domain.nil? || status.local?
+
     custom_emoji = CustomEmoji.find_by(shortcode: name, domain: domain)
     reaction = StatusReaction.find_by(account: account, status: status, name: name, custom_emoji: custom_emoji)
     return reaction unless reaction.nil?
diff --git a/app/validators/status_reaction_validator.rb b/app/validators/status_reaction_validator.rb
index 0338bf531a..046476de9d 100644
--- a/app/validators/status_reaction_validator.rb
+++ b/app/validators/status_reaction_validator.rb
@@ -19,7 +19,7 @@ class StatusReactionValidator < ActiveModel::Validator
   end
 
   def new_reaction?(reaction)
-    !reaction.status.status_reactions.exists?(status: reaction.status, account: reaction.account, name: reaction.name)
+    !reaction.status.status_reactions.exists?(status: reaction.status, account: reaction.account, name: reaction.name, custom_emoji: reaction.custom_emoji)
   end
 
   def limit_reached?(reaction)
diff --git a/config/locales-glitch/en.yml b/config/locales-glitch/en.yml
index e88e98191e..fecaa8beae 100644
--- a/config/locales-glitch/en.yml
+++ b/config/locales-glitch/en.yml
@@ -38,6 +38,11 @@ en:
       title: User verification
   generic:
     use_this: Use this
+  notification_mailer:
+    reaction:
+      body: "%{name} reacted to your post:"
+      subject: "%{name} reacted to your post"
+      title: New reaction
   settings:
     flavours: Flavours
   notification_mailer:
diff --git a/spec/models/status_reaction_spec.rb b/spec/models/status_reaction_spec.rb
index f0467ce7b2..ccfa9ee8d8 100644
--- a/spec/models/status_reaction_spec.rb
+++ b/spec/models/status_reaction_spec.rb
@@ -1,7 +1,3 @@
 # frozen_string_literal: true
 
 require 'rails_helper'
-
-RSpec.describe StatusReaction do
-  pending "add some examples to (or delete) #{__FILE__}"
-end