diff --git a/src/components/LeftSidebar/LeftSidebar.spec.js b/src/components/LeftSidebar/LeftSidebar.spec.js
index 1114c87b724..ea73f4faa7f 100644
--- a/src/components/LeftSidebar/LeftSidebar.spec.js
+++ b/src/components/LeftSidebar/LeftSidebar.spec.js
@@ -47,7 +47,8 @@ describe('LeftSidebar.vue', () => {
 				// to prevent user status fetching
 				NcAvatar: true,
 				// to prevent complex dialog logic
-				NewGroupConversation: true,
+				NcActions: true,
+				NcModal: true,
 			},
 		})
 	}
@@ -611,9 +612,6 @@ describe('LeftSidebar.vue', () => {
 			})
 
 			test('shows group conversation dialog when clicking search result', async () => {
-				const eventHandler = jest.fn()
-				EventBus.$once('new-group-conversation-dialog', eventHandler)
-
 				const wrapper = await testSearch(SEARCH_TERM, [...groupsResults], [])
 
 				const resultsListItems = findNcListItems(wrapper, groupsResults.map(item => item.label))
@@ -621,7 +619,13 @@ describe('LeftSidebar.vue', () => {
 				expect(resultsListItems).toHaveLength(groupsResults.length)
 
 				await resultsListItems.at(1).findAll('a').trigger('click')
-				expect(eventHandler).toHaveBeenCalledWith(groupsResults[1])
+				// Wait for the component to render
+				await wrapper.vm.$nextTick()
+				const ncModalComponent = wrapper.findComponent({ name: 'NcModal' })
+				expect(ncModalComponent.exists()).toBeTruthy()
+
+				const input = ncModalComponent.findComponent({ name: 'NcTextField', ref: 'conversationName' })
+				expect(input.props('value')).toBe(groupsResults[1].label)
 
 				// nothing created yet
 				expect(createOneToOneConversationAction).not.toHaveBeenCalled()
@@ -629,8 +633,6 @@ describe('LeftSidebar.vue', () => {
 			})
 
 			test('shows circles conversation dialog when clicking search result', async () => {
-				const eventHandler = jest.fn()
-				EventBus.$once('new-group-conversation-dialog', eventHandler)
 
 				const wrapper = await testSearch(SEARCH_TERM, [...circlesResults], [])
 
@@ -639,7 +641,13 @@ describe('LeftSidebar.vue', () => {
 				expect(resultsListItems).toHaveLength(circlesResults.length)
 
 				await resultsListItems.at(1).findAll('a').trigger('click')
-				expect(eventHandler).toHaveBeenCalledWith(circlesResults[1])
+
+				// Wait for the component to render
+				await wrapper.vm.$nextTick()
+				const ncModalComponent = wrapper.findComponent({ name: 'NcModal' })
+				expect(ncModalComponent.exists()).toBeTruthy()
+				const input = ncModalComponent.findComponent({ name: 'NcTextField', ref: 'conversationName' })
+				expect(input.props('value')).toBe(circlesResults[1].label)
 
 				// nothing created yet
 				expect(createOneToOneConversationAction).not.toHaveBeenCalled()
@@ -703,6 +711,7 @@ describe('LeftSidebar.vue', () => {
 			const wrapper = mountComponent()
 			const buttonEl = wrapper.findComponent({ name: 'NewGroupConversation' })
 			expect(buttonEl.exists()).toBeTruthy()
+
 		})
 		test('does not show new conversation button if user cannot start conversations', () => {
 			loadStateSettings.start_conversations = false
diff --git a/src/components/LeftSidebar/LeftSidebar.vue b/src/components/LeftSidebar/LeftSidebar.vue
index 592d4ce8863..1d1b67a2cac 100644
--- a/src/components/LeftSidebar/LeftSidebar.vue
+++ b/src/components/LeftSidebar/LeftSidebar.vue
@@ -23,15 +23,64 @@
 	<NcAppNavigation :aria-label="t('spreed', 'Conversation list')">
 		<div class="new-conversation"
 			:class="{ 'new-conversation--scrolled-down': !isScrolledToTop }">
-			<SearchBox v-model="searchText"
+			<SearchBox ref="searchbox"
+				:value.sync="searchText"
 				class="conversations-search"
+				:class="{'conversations-search--expanded': isFocused}"
 				:is-searching="isSearching"
+				@focus="setIsFocused"
+				@blur="setIsFocused"
 				@input="debounceFetchSearchResults"
 				@submit="onInputEnter"
 				@keydown.enter.native="handleEnter"
 				@abort-search="abortSearch" />
-			<NewGroupConversation v-if="canStartConversations" />
+
+			<!-- Options -->
+			<div class="options"
+				:class="{'hidden-visually': isFocused}">
+				<NcActions class="filter-actions"
+					:primary="isFiltered !== null">
+					<template #icon>
+						<FilterIcon :size="15" />
+					</template>
+					<NcActionButton close-after-click
+						class="filter-actions__button"
+						:class="{'filter-actions__button--active': isFiltered === 'mentions'}"
+						@click="handleFilter('mentions')">
+						<template #icon>
+							<AtIcon :size="20" />
+						</template>
+						{{ t('spreed','Filter unread mentions') }}
+					</NcActionButton>
+
+					<NcActionButton close-after-click
+						class="filter-actions__button"
+						:class="{'filter-actions__button--active': isFiltered === 'unread'}"
+						@click="handleFilter('unread')">
+						<template #icon>
+							<MessageBadge :size="20" />
+						</template>
+						{{ t('spreed','Filter unread messages') }}
+					</NcActionButton>
+
+					<NcActionButton v-if="isFiltered"
+						close-after-click
+						class="filter-actions__clearbutton"
+						@click="handleFilter(null)">
+						<template #icon>
+							<FilterRemoveIcon :size="20" />
+						</template>
+						{{ t('spreed', 'Clear filters') }}
+					</NcActionButton>
+				</NcActions>
+			</div>
+
+			<!-- New Conversation -->
+			<NewGroupConversation v-if="canStartConversations"
+				ref="newGroupConversation"
+				class="new-conversation__button" />
 		</div>
+
 		<template #list>
 			<li ref="container" class="left-sidebar__list">
 				<ul ref="scroller"
@@ -46,7 +95,7 @@
 					<template v-if="!initialisedConversations">
 						<LoadingPlaceholder type="conversations" />
 					</template>
-					<Hint v-else-if="searchText && !conversationsList.length"
+					<Hint v-else-if="noMatchFound"
 						:hint="t('spreed', 'No matches')" />
 					<template v-if="isSearching">
 						<template v-if="!listedConversationsLoading && searchResultsListedConversations.length > 0">
@@ -132,10 +181,17 @@
 <script>
 import debounce from 'debounce'
 
+import AtIcon from 'vue-material-design-icons/At.vue'
+import FilterIcon from 'vue-material-design-icons/Filter.vue'
+import FilterRemoveIcon from 'vue-material-design-icons/FilterRemove.vue'
+import MessageBadge from 'vue-material-design-icons/MessageBadge.vue'
+
 import { showError } from '@nextcloud/dialogs'
 import { emit } from '@nextcloud/event-bus'
 import { loadState } from '@nextcloud/initial-state'
 
+import NcActionButton from '@nextcloud/vue/dist/Components/NcActionButton.js'
+import NcActions from '@nextcloud/vue/dist/Components/NcActions.js'
 import NcAppNavigation from '@nextcloud/vue/dist/Components/NcAppNavigation.js'
 import NcAppNavigationCaption from '@nextcloud/vue/dist/Components/NcAppNavigationCaption.js'
 import NcButton from '@nextcloud/vue/dist/Components/NcButton.js'
@@ -173,6 +229,12 @@ export default {
 		LoadingPlaceholder,
 		NcListItem,
 		ConversationIcon,
+		NcActions,
+		NcActionButton,
+		AtIcon,
+		MessageBadge,
+		FilterIcon,
+		FilterRemoveIcon,
 	},
 
 	mixins: [
@@ -203,19 +265,25 @@ export default {
 			preventFindingUnread: false,
 			roomListModifiedBefore: 0,
 			forceFullRoomListRefreshAfterXLoops: 0,
+			isFocused: false,
+			isFiltered: null,
 		}
 	},
 
 	computed: {
 		conversationsList() {
 			let conversations = this.$store.getters.conversationsList
-
 			if (this.searchText !== '') {
 				const lowerSearchText = this.searchText.toLowerCase()
 				conversations = conversations.filter(conversation =>
 					conversation.displayName.toLowerCase().includes(lowerSearchText)
-					|| conversation.name.toLowerCase().includes(lowerSearchText)
+							|| conversation.name.toLowerCase().includes(lowerSearchText)
 				)
+			} else if (this.isFiltered === 'unread') {
+				conversations = conversations.filter(conversation => conversation.unreadMessages > 0)
+			} else if (this.isFiltered === 'mentions') {
+				conversations = conversations.filter(conversation => conversation.unreadMention || (conversation.unreadMessages > 0
+					&& (conversation.type === CONVERSATION.TYPE.ONE_TO_ONE || conversation.type === CONVERSATION.TYPE.ONE_TO_ONE_FORMER)))
 			}
 
 			// FIXME: this modifies the original array,
@@ -227,6 +295,10 @@ export default {
 			return this.searchText !== ''
 		},
 
+		noMatchFound() {
+			return (this.searchText || this.isFiltered) && !this.conversationsList.length
+		},
+
 		showStartConversationsOptions() {
 			return this.isSearching && this.canStartConversations
 		},
@@ -311,12 +383,24 @@ export default {
 		getFocusableList() {
 			return this.$el.querySelectorAll('li.acli_wrapper .acli')
 		},
+		setIsFocused(event) {
+			if (event.relatedTarget?.className.includes('input-field__clear-button') || this.searchText !== '') {
+				return
+			}
+			this.isFocused = event.type === 'focus'
+
+		},
+
+		handleFilter(filter) {
+			this.isFiltered = filter
+			// Clear the search input once a filter is active
+			this.searchText = ''
+		},
+
 		focusCancel() {
 			return this.abortSearch()
 		},
-		isFocused() {
-			return this.isSearching
-		},
+
 		scrollBottomUnread() {
 			this.preventFindingUnread = true
 			this.$refs.container.scrollTo({
@@ -410,8 +494,8 @@ export default {
 					params: { token: conversation.token },
 				}).catch(err => console.debug(`Error while pushing the new conversation's route: ${err}`))
 			} else {
-				// For other types we start the conversation creation dialog
-				EventBus.$emit('new-group-conversation-dialog', item)
+				// For other types, show the modal directly
+				this.$refs.newGroupConversation.showModalForItem(item)
 			}
 		},
 
@@ -422,6 +506,7 @@ export default {
 		// Reset the search text, therefore end the search operation.
 		abortSearch() {
 			this.searchText = ''
+			this.isFocused = false
 			if (this.cancelSearchPossibleConversations) {
 				this.cancelSearchPossibleConversations()
 			}
@@ -618,7 +703,6 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-
 @import '../../assets/variables';
 
 .scroller {
@@ -654,11 +738,44 @@ export default {
 }
 
 .conversations-search {
-	flex-grow: 1;
-
+	transition: all 0.3s ease;
+	z-index: 1;
+	// New conversation button width : 52 px
+	// Filters button width : 44 px
+	// Spacing : 3px + 1px
+	// Total : 100 px
+	width : calc(100% - 100px);
+	display : flex;
 	:deep(.input-field__input) {
 		border-radius: var(--border-radius-pill);
 	}
+	&--expanded {
+
+		// Gets expanded : 100 % - (52px + 1px)
+		width : calc(100% - 53px );
+	}
+
+}
+
+.options{
+	position: absolute;
+	right : 52px; // New conversation button's width
+	display: flex;
+	height: var(--default-clickable-area);
+}
+
+.new-conversation__button{
+	position: absolute;
+	right: 1px;
+}
+
+.filter-actions__button--active{
+	background-color: var(--color-primary-element-light);
+	border-radius: 6px;
+	:deep(.action-button__longtext){
+		font-weight: bold;
+	}
+
 }
 
 .settings-button {
diff --git a/src/components/LeftSidebar/NewGroupConversation/NewGroupConversation.vue b/src/components/LeftSidebar/NewGroupConversation/NewGroupConversation.vue
index 6701a55336a..3a5a02958a2 100644
--- a/src/components/LeftSidebar/NewGroupConversation/NewGroupConversation.vue
+++ b/src/components/LeftSidebar/NewGroupConversation/NewGroupConversation.vue
@@ -192,7 +192,6 @@ import {
 	createPrivateConversation,
 	setConversationPassword,
 } from '../../../services/conversationsService.js'
-import { EventBus } from '../../../services/EventBus.js'
 import { addParticipant } from '../../../services/participantsService.js'
 import { copyConversationLinkToClipboard } from '../../../services/urlService.js'
 
@@ -306,14 +305,7 @@ export default {
 			})
 		},
 	},
-
-	mounted() {
-		EventBus.$on('new-group-conversation-dialog', this.showModalForItem)
-	},
-
-	destroyed() {
-		EventBus.$off('new-group-conversation-dialog', this.showModalForItem)
-	},
+	expose: ['showModalForItem'],
 
 	methods: {
 		showModal() {
diff --git a/src/components/LeftSidebar/SearchBox/SearchBox.vue b/src/components/LeftSidebar/SearchBox/SearchBox.vue
index 693021077a5..67cbdb72e2c 100644
--- a/src/components/LeftSidebar/SearchBox/SearchBox.vue
+++ b/src/components/LeftSidebar/SearchBox/SearchBox.vue
@@ -22,10 +22,12 @@
 <template>
 	<form @submit.prevent="handleSubmit">
 		<NcTextField ref="searchConversations"
-			:value.sync="localValue"
+			:value="value"
 			:label="placeholderText"
 			:show-trailing-button="isSearching"
 			trailing-button-icon="close"
+			v-on="$listeners"
+			@update:value="updateValue"
 			@trailing-button-click="abortSearch"
 			@keypress.enter="handleSubmit">
 			<Magnify :size="16" />
@@ -52,11 +54,10 @@ export default {
 		 */
 		placeholderText: {
 			type: String,
-			default: t('spreed', 'Search conversations or users'),
+			default: t('spreed', 'Search …'),
 		},
 		/**
-		 * The value of the input field, when receiving it as a prop the localValue
-		 * is updated.
+		 * The value of the input field.
 		 */
 		value: {
 			type: String,
@@ -73,25 +74,12 @@ export default {
 
 	emits: ['update:value', 'input', 'submit', 'abort-search'],
 
-	data() {
-		return {
-			localValue: '',
-		}
-	},
 	computed: {
 		cancelSearchLabel() {
 			return t('spreed', 'Cancel search')
 		},
 	},
-	watch: {
-		localValue(localValue) {
-			this.$emit('update:value', localValue)
-			this.$emit('input', localValue)
-		},
-		value(value) {
-			this.localValue = value
-		},
-	},
+
 	mounted() {
 		this.focusInputIfRoot()
 		/**
@@ -103,6 +91,10 @@ export default {
 		EventBus.$off('route-change', this.focusInputIfRoot)
 	},
 	methods: {
+		updateValue(value) {
+			this.$emit('update:value', value)
+			this.$emit('input', value)
+		},
 		// Focus the input field of the searchbox component.
 		focusInput() {
 			this.$refs.searchConversations.$el.focus()
diff --git a/src/mixins/arrowNavigation.js b/src/mixins/arrowNavigation.js
index e1ed38542e9..fb48370b719 100644
--- a/src/mixins/arrowNavigation.js
+++ b/src/mixins/arrowNavigation.js
@@ -43,7 +43,7 @@ const arrowNavigation = {
 		mountArrowNavigation() {
 			document.addEventListener('keydown', (event) => {
 				// https://www.w3.org/WAI/GL/wiki/Using_ARIA_menus
-				if (this.isFocused()) {
+				if (this.isSearching) {
 					// If arrow down, focus next result
 					if (event.key === 'ArrowDown') {
 						this.focusNext(event)