diff --git a/app/containers/MessageActions.js b/app/containers/MessageActions.js
index ab3677fc..79f75c7c 100644
--- a/app/containers/MessageActions.js
+++ b/app/containers/MessageActions.js
@@ -63,6 +63,12 @@ class MessageActions extends React.Component {
 			this.EDIT_INDEX = this.options.length - 1;
 		}
 
+		// Mark as unread
+		if (message.u && message.u._id !== user.id) {
+			this.options.push(I18n.t('Mark_unread'));
+			this.UNREAD_INDEX = this.options.length - 1;
+		}
+
 		// Permalink
 		this.options.push(I18n.t('Permalink'));
 		this.PERMALINK_INDEX = this.options.length - 1;
@@ -243,6 +249,30 @@ class MessageActions extends React.Component {
 		editInit(message);
 	}
 
+	handleUnread = async() => {
+		const { message, room } = this.props;
+		const { id: messageId, ts } = message;
+		const { rid } = room;
+		try {
+			const db = database.active;
+			const result = await RocketChat.markAsUnread({ messageId });
+			if (result.success) {
+				const subCollection = db.collections.get('subscriptions');
+				const subRecord = await subCollection.find(rid);
+				await db.action(async() => {
+					try {
+						await subRecord.update(sub => sub.lastOpen = ts);
+					} catch {
+						// do nothing
+					}
+				});
+				Navigation.navigate('RoomsListView');
+			}
+		} catch (e) {
+			log(e);
+		}
+	}
+
 	handleCopy = async() => {
 		const { message } = this.props;
 		await Clipboard.setString(message.msg);
@@ -349,6 +379,9 @@ class MessageActions extends React.Component {
 				case this.EDIT_INDEX:
 					this.handleEdit();
 					break;
+				case this.UNREAD_INDEX:
+					this.handleUnread();
+					break;
 				case this.PERMALINK_INDEX:
 					this.handlePermalink();
 					break;
diff --git a/app/i18n/locales/en.js b/app/i18n/locales/en.js
index 7f40b56b..7c9a01dc 100644
--- a/app/i18n/locales/en.js
+++ b/app/i18n/locales/en.js
@@ -501,5 +501,6 @@ export default {
 	New_line: 'New line',
 	You_will_be_logged_out_of_this_application: 'You will be logged out of this application.',
 	Clear: 'Clear',
-	This_will_clear_all_your_offline_data: 'This will clear all your offline data.'
+	This_will_clear_all_your_offline_data: 'This will clear all your offline data.',
+	Mark_unread: 'Mark Unread'
 };
diff --git a/app/i18n/locales/pt-BR.js b/app/i18n/locales/pt-BR.js
index 61711e32..4afde104 100644
--- a/app/i18n/locales/pt-BR.js
+++ b/app/i18n/locales/pt-BR.js
@@ -449,5 +449,6 @@ export default {
 	New_line: 'Nova linha',
 	You_will_be_logged_out_of_this_application: 'Você sairá deste aplicativo.',
 	Clear: 'Limpar',
-	This_will_clear_all_your_offline_data: 'Isto limpará todos os seus dados offline.'
+	This_will_clear_all_your_offline_data: 'Isto limpará todos os seus dados offline.',
+	Mark_unread: 'Marcar como não Lida'
 };
diff --git a/app/lib/rocketchat.js b/app/lib/rocketchat.js
index 1858b451..81aacb89 100644
--- a/app/lib/rocketchat.js
+++ b/app/lib/rocketchat.js
@@ -649,6 +649,9 @@ const RocketChat = {
 		// RC 0.49.0
 		return this.sdk.post('chat.update', { roomId: rid, msgId: id, text: msg });
 	},
+	markAsUnread({ messageId }) {
+		return this.sdk.post('subscriptions.unread', { firstUnreadMessage: { _id: messageId } });
+	},
 	toggleStarMessage(messageId, starred) {
 		if (starred) {
 			// RC 0.59.0
diff --git a/app/views/RoomView/index.js b/app/views/RoomView/index.js
index c0df45fd..39053591 100644
--- a/app/views/RoomView/index.js
+++ b/app/views/RoomView/index.js
@@ -737,7 +737,7 @@ class RoomView extends React.Component {
 			showUnreadSeparator = moment(item.ts).isAfter(lastOpen);
 		} else {
 			showUnreadSeparator = lastOpen
-				&& moment(item.ts).isAfter(lastOpen)
+				&& moment(item.ts).isSameOrAfter(lastOpen)
 				&& moment(previousItem.ts).isBefore(lastOpen);
 			if (!moment(item.ts).isSame(previousItem.ts, 'day')) {
 				dateSeparator = item.ts;