diff --git a/web/chat/composed-message.react.js b/web/chat/composed-message.react.js
--- a/web/chat/composed-message.react.js
+++ b/web/chat/composed-message.react.js
@@ -121,12 +121,16 @@
     }
 
     let inlineSidebar = null;
-    if (this.props.containsInlineSidebar && item.threadCreatedFromMessage) {
+    if (
+      (this.props.containsInlineSidebar && item.threadCreatedFromMessage) ||
+      item.reactions.size > 0
+    ) {
       const positioning = isViewer ? 'right' : 'left';
       inlineSidebar = (
         <div className={css.sidebarMarginBottom}>
           <InlineSidebar
             threadInfo={item.threadCreatedFromMessage}
+            reactions={item.reactions}
             positioning={positioning}
           />
         </div>
diff --git a/web/chat/inline-sidebar.react.js b/web/chat/inline-sidebar.react.js
--- a/web/chat/inline-sidebar.react.js
+++ b/web/chat/inline-sidebar.react.js
@@ -1,9 +1,11 @@
 // @flow
 
 import classNames from 'classnames';
+import invariant from 'invariant';
 import * as React from 'react';
 
 import useInlineSidebarText from 'lib/hooks/inline-sidebar-text.react';
+import type { MessageReactionInfo } from 'lib/selectors/chat-selectors';
 import type { ThreadInfo } from 'lib/types/thread-types';
 
 import CommIcon from '../CommIcon.react';
@@ -12,7 +14,7 @@
 
 type Props = {
   +threadInfo: ?ThreadInfo,
-  +reactions?: $ReadOnlyArray<string>,
+  +reactions?: Map<string, MessageReactionInfo>,
   +positioning: 'left' | 'center' | 'right',
 };
 function InlineSidebar(props: Props): React.Node {
@@ -29,17 +31,24 @@
   ]);
 
   const reactionsList = React.useMemo(() => {
-    if (!reactions || reactions.length === 0) {
+    if (!reactions) {
       return null;
     }
-    const reactionsItems = reactions.map(reaction => {
-      return (
-        <div key={reaction} className={css.reactions}>
-          {reaction}
-        </div>
-      );
-    });
-    return <div className={css.reactionsContainer}>{reactionsItems}</div>;
+
+    let reactionText = '';
+    for (const key of reactions.keys()) {
+      const reactionInfo = reactions.get(key);
+      invariant(reactionInfo, 'reactionInfo should be set');
+
+      reactionText += key;
+      if (reactionInfo.users.size > 1) {
+        reactionText += ` ${reactionInfo.users.size}`;
+      }
+    }
+
+    const reactionItems = <div style={css.reactions}>{reactionText}</div>;
+
+    return <div className={css.reactionsContainer}>{reactionItems}</div>;
   }, [reactions]);
 
   const onClick = useOnClickThread(threadInfo);
diff --git a/web/chat/robotext-message.react.js b/web/chat/robotext-message.react.js
--- a/web/chat/robotext-message.react.js
+++ b/web/chat/robotext-message.react.js
@@ -38,11 +38,15 @@
 class RobotextMessage extends React.PureComponent<Props> {
   render() {
     let inlineSidebar;
-    if (this.props.item.threadCreatedFromMessage) {
+    if (
+      this.props.item.threadCreatedFromMessage ||
+      this.props.item.reactions.size > 0
+    ) {
       inlineSidebar = (
         <div className={css.sidebarMarginTop}>
           <InlineSidebar
             threadInfo={this.props.item.threadCreatedFromMessage}
+            reactions={this.props.item.reactions}
             positioning="center"
           />
         </div>