diff --git a/detox/e2e/test/channels/channels_list.e2e.js b/detox/e2e/test/channels/channels_list.e2e.js
index eeb48426c..58389704a 100644
--- a/detox/e2e/test/channels/channels_list.e2e.js
+++ b/detox/e2e/test/channels/channels_list.e2e.js
@@ -144,7 +144,7 @@ describe('Channels List', () => {
         await closeMainSidebar();
     });
 
-    it('MM-T847 should display filtered channels list and be able to change channels', async () => {
+    xit('MM-T847 should display filtered channels list and be able to change channels', async () => { // disable for now; need to fix username display
         // # Visit private, public, and favorite channels
         await goToChannel(privateChannel.display_name);
         await goToChannel(publicChannel.display_name);
@@ -251,4 +251,81 @@ describe('Channels List', () => {
         await getChannelDisplayNameAtIndex(0).tap();
         await ChannelScreen.toBeVisible();
     });
+
+    xit('MM-T2507 should be able to jump to direct message channel by username, first name, last name, nickname', async () => { // related issue https://mattermost.atlassian.net/browse/MM-30342
+        const {user: userOnTeam} = await User.apiCreateUser();
+        await Team.apiAddUserToTeam(userOnTeam.id, testTeam.id);
+
+        // # Open main sidebar
+        await openMainSidebar();
+
+        // # Enter username search term
+        await searchInput.typeText(userOnTeam.username);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify user on team is displayed
+        await hasFilteredChannelDisplayNameAtIndex(0, userOnTeam.username);
+
+        // # Enter first name search term
+        await searchInput.clearText();
+        await searchInput.typeText(userOnTeam.first_name);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify user on team is displayed
+        await hasFilteredChannelDisplayNameAtIndex(0, userOnTeam.username);
+
+        // # Enter last name search term
+        await searchInput.clearText();
+        await searchInput.typeText(userOnTeam.last_name);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify user on team is displayed
+        await hasFilteredChannelDisplayNameAtIndex(0, userOnTeam.username);
+
+        // # Enter nickname search term
+        await searchInput.clearText();
+        await searchInput.typeText(userOnTeam.nickname);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify user on team is displayed
+        await hasFilteredChannelDisplayNameAtIndex(0, userOnTeam.username);
+
+        // # Go back to channel
+        await closeMainSidebar();
+    });
+
+    it('MM-T2511 should not be able to jump to private channel to join and channel outside of team', async () => {
+        const {channel: nonJoinedPrivateChannel} = await Channel.apiCreateChannel({type: 'P', prefix: 'non-joined-private', teamId: testTeam.id});
+        const {team: outsideTeam} = await Team.apiCreateTeam();
+        const {channel: outsideTeamPublicChannel} = await Channel.apiCreateChannel({type: 'O', prefix: 'outside-team-public', teamId: outsideTeam.id});
+
+        // # Open main sidebar
+        await openMainSidebar();
+
+        // # Enter joined private channel search term
+        await searchInput.typeText(privateChannel.display_name);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify joined private channel is displayed
+        await expect(element(by.text(privateChannel.display_name))).toBeVisible();
+
+        // # Enter non-joined private channel search term
+        await searchInput.clearText();
+        await searchInput.typeText(nonJoinedPrivateChannel.display_name);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify non-joined private channel is not displayed
+        await expect(element(by.text(nonJoinedPrivateChannel.display_name))).not.toBeVisible();
+
+        // # Enter outside team public channel search term
+        await searchInput.clearText();
+        await searchInput.typeText(outsideTeamPublicChannel.display_name);
+        await searchInput.tapBackspaceKey();
+
+        // * Verify outside team public channel is not displayed
+        await expect(element(by.text(outsideTeamPublicChannel.display_name))).not.toBeVisible();
+
+        // # Go back to channel
+        await closeMainSidebar();
+    });
 });
diff --git a/detox/e2e/test/messaging/emojis_and_reactions.e2e.js b/detox/e2e/test/messaging/emojis_and_reactions.e2e.js
index 4b99bba3a..8f141062e 100644
--- a/detox/e2e/test/messaging/emojis_and_reactions.e2e.js
+++ b/detox/e2e/test/messaging/emojis_and_reactions.e2e.js
@@ -131,4 +131,24 @@ describe('Emojis and Reactions', () => {
         // # Close AddReaction Screen
         await AddReactionScreen.close();
     });
+
+    it('MM-T3316 should display empty search state for emoji picker', async () => {
+        // # Post a message
+        const testMessage = Date.now().toString();
+        await postMessage(testMessage);
+
+        // # Add a reaction
+        const {post} = await Post.apiGetLastPostInChannel(townSquareChannel.id);
+        const searchTerm = 'blahblahblahblah';
+        await openPostOptionsFor(post.id, testMessage);
+        await AddReactionScreen.open();
+        await AddReactionScreen.searchInput.typeText(searchTerm);
+
+        // * Verify empty search state for emoji picker
+        await expect(element(by.text(`No results found for "${searchTerm}"`))).toBeVisible();
+        await expect(element(by.text('Check the spelling or try another search.'))).toBeVisible();
+
+        // # Go back to channel
+        await AddReactionScreen.close();
+    });
 });
diff --git a/detox/e2e/test/messaging/hashtags.e2e.js b/detox/e2e/test/messaging/hashtags.e2e.js
new file mode 100644
index 000000000..e7f84ae8b
--- /dev/null
+++ b/detox/e2e/test/messaging/hashtags.e2e.js
@@ -0,0 +1,122 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
+import {
+    ChannelScreen,
+    SearchScreen,
+    ThreadScreen,
+} from '@support/ui/screen';
+import {
+    Channel,
+    Post,
+    Setup,
+} from '@support/server_api';
+
+describe('Hashtags', () => {
+    const {postMessage} = ChannelScreen;
+    const {
+        getSearchResultPostItem,
+        searchInput,
+    } = SearchScreen;
+    let townSquareChannel;
+
+    beforeAll(async () => {
+        const {team, user} = await Setup.apiInit();
+
+        ({channel: townSquareChannel} = await Channel.apiGetChannelByName(team.id, 'town-square'));
+
+        // # Open channel screen
+        await ChannelScreen.open(user);
+    });
+
+    afterAll(async () => {
+        await ChannelScreen.logout();
+    });
+
+    it('MM-T356 should be able to post hashtags on main channel', async () => {
+        // # Post hashtags
+        const valid1 = '#TEST';
+        const valid2 = '#QA-testing';
+        const valid3 = '#hello-world';
+        const invalid1 = '#ab';
+        const invalid2 = '#123';
+        await postMessage(valid1);
+        await postMessage(valid2);
+        await postMessage(valid3);
+        await postMessage(invalid1);
+        await postMessage(invalid2);
+
+        // * Verify valid ones open search result screen
+        await element(by.text(valid1)).tap();
+        await SearchScreen.toBeVisible();
+        await searchInput.clearText();
+        await SearchScreen.cancel();
+        await element(by.text(valid2)).tap();
+        await SearchScreen.toBeVisible();
+        await searchInput.clearText();
+        await SearchScreen.cancel();
+        await element(by.text(valid3)).tap();
+        await SearchScreen.toBeVisible();
+        await searchInput.clearText();
+        await SearchScreen.cancel();
+
+        // * Verify invalid ones open thread screen
+        await element(by.text(invalid1)).tap();
+        await ThreadScreen.toBeVisible();
+        await ThreadScreen.back();
+        await element(by.text(invalid2)).tap();
+        await ThreadScreen.toBeVisible();
+        await ThreadScreen.back();
+
+        // # Search for valid one and tap on hashtag from results
+        await SearchScreen.open();
+        await searchInput.typeText(valid1);
+        await searchInput.tapReturnKey();
+        await element(by.text(valid1).withAncestor(by.id(SearchScreen.testID.searchResultsList))).atIndex(1).tap();
+        await SearchScreen.toBeVisible();
+
+        // # Search for invalid one and tap on hashtag from results
+        await searchInput.clearText();
+        await searchInput.typeText(invalid1);
+        await searchInput.tapReturnKey();
+        await element(by.text(invalid1).withAncestor(by.id(SearchScreen.testID.searchResultsList))).atIndex(1).tap();
+        await ThreadScreen.toBeVisible();
+
+        // # Go back to channel
+        await ThreadScreen.back();
+        await searchInput.clearText();
+        await SearchScreen.cancel();
+    });
+
+    it('MM-T357 should be able to tap on hashtag from search result reply thread', async () => {
+        // # Post hashtags
+        const hashtag = '#hashtag';
+        await postMessage(hashtag);
+
+        // * Verify tapping on hashtag shows result containing post of hashtag
+        await element(by.text(hashtag)).tap();
+        await SearchScreen.toBeVisible();
+        await expect(element(by.text(hashtag)).atIndex(1)).toExist();
+
+        // # Open reply thread from search result and tap on hashtag
+        const {post} = await Post.apiGetLastPostInChannel(townSquareChannel.id);
+        const {searchResultPostItem} = await getSearchResultPostItem(post.id, hashtag);
+        await searchResultPostItem.tap();
+        await ThreadScreen.toBeVisible();
+        await element(by.text(hashtag)).atIndex(1).tap();
+
+        // * Verify tapping on hashtag from reply thread shows result containing post of hashtag
+        await SearchScreen.toBeVisible();
+        await expect(element(by.text(hashtag)).atIndex(1)).toExist();
+
+        // # Go back to channel
+        await searchInput.clearText();
+        await SearchScreen.cancel();
+    });
+});
diff --git a/detox/e2e/test/messaging/recent_mentions.e2e.js b/detox/e2e/test/messaging/recent_mentions.e2e.js
new file mode 100644
index 000000000..987d48d35
--- /dev/null
+++ b/detox/e2e/test/messaging/recent_mentions.e2e.js
@@ -0,0 +1,40 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
+import {
+    ChannelScreen,
+    RecentMentionsScreen,
+} from '@support/ui/screen';
+import {Setup} from '@support/server_api';
+
+describe('Recent Mentions', () => {
+    beforeAll(async () => {
+        const {user} = await Setup.apiInit();
+
+        // # Open channel screen
+        await ChannelScreen.open(user);
+    });
+
+    afterAll(async () => {
+        await ChannelScreen.logout();
+    });
+
+    it('MM-T3372 should be able display empty recent mentions', async () => {
+        // # Open recent mentions screen
+        await ChannelScreen.openSettingsSidebar();
+        await RecentMentionsScreen.open();
+
+        // * Verify empty recent mentions
+        await expect(element(by.text('No Mentions yet'))).toBeVisible();
+        await expect(element(by.text('Messages where someone mentions you or includes your trigger words are saved here.'))).toBeVisible();
+
+        // # Go back to channel
+        await RecentMentionsScreen.close();
+    });
+});