diff --git a/frontend/src/api/webmail.js b/frontend/src/api/webmail.js
index 9e2b0bc44..769bfe045 100644
--- a/frontend/src/api/webmail.js
+++ b/frontend/src/api/webmail.js
@@ -55,4 +55,12 @@ export default {
     }
     return repository.post('/webmail/emails/mark_as_not_junk/', body)
   },
+  flagSelection(mailbox, selection, status) {
+    const body = {
+      mailbox,
+      selection,
+      status,
+    }
+    return repository.post('/webmail/emails/flag/', body)
+  },
 }
diff --git a/frontend/src/components/webmail/EmailList.vue b/frontend/src/components/webmail/EmailList.vue
index 5f5af08eb..cb618daed 100644
--- a/frontend/src/components/webmail/EmailList.vue
+++ b/frontend/src/components/webmail/EmailList.vue
@@ -1,7 +1,12 @@
 <template>
-  <v-card class="mt-6 mb-2">
+  <v-card class="mt-6 mb-2 mx-1">
     <v-toolbar color="white" flat>
-      <v-checkbox class="mr-4" hide-details />
+      <v-checkbox
+        v-model="selectAll"
+        class="mr-4"
+        hide-details
+        @update:model-value="toggleAllSelection"
+      />
 
       <v-text-field
         v-model="search"
@@ -14,54 +19,138 @@
         density="compact"
         class="flex-grow-0 w-33 mr-4"
       ></v-text-field>
+      <v-btn
+        class="ml-2"
+        color="error"
+        variant="tonal"
+        icon="mdi-trash-can"
+        size="small"
+        :loading="working"
+        @click="deleteSelection"
+      >
+      </v-btn>
+      <v-btn
+        v-if="$route.params.mailbox === 'Junk'"
+        class="ml-2"
+        color="warning"
+        variant="tonal"
+        icon="mdi-fire"
+        size="small"
+        :loading="working"
+        @click="markSelectionAsJunk"
+      >
+      </v-btn>
+      <v-btn
+        v-else
+        class="ml-2"
+        color="success"
+        variant="tonal"
+        icon="mdi-thumb-up"
+        size="small"
+        :loading="working"
+        @click="markSelectionAsNotJunk"
+      >
+      </v-btn>
+      <v-btn class="ml-2" variant="tonal" icon size="small">
+        <v-icon icon="mdi-cog" />
+        <v-menu activator="parent">
+          <v-list density="compact">
+            <v-list-item
+              :title="$gettext('Mark as read')"
+              prepend-icon="mdi-eye"
+              @click="() => flagSelection('read')"
+            />
+            <v-list-item
+              :title="$gettext('Mark as unread')"
+              prepend-icon="mdi-eye-outline"
+              @click="() => flagSelection('unread')"
+            />
+            <v-list-item
+              :title="$gettext('Mark as followed')"
+              prepend-icon="mdi-star"
+              @click="() => flagSelection('flagged')"
+            />
+            <v-list-item
+              :title="$gettext('Mark as unfollowed')"
+              prepend-icon="mdi-star-outline"
+              @click="() => flagSelection('unflagged')"
+            />
+          </v-list>
+        </v-menu>
+      </v-btn>
+      <v-spacer />
+      <div v-if="emails.results" class="d-flex align-center">
+        <div class="text-caption mr-2">
+          {{ emails.first_index }}-{{ emails.last_index }} {{ $gettext('on') }}
+          {{ emails.count }}
+        </div>
+        <div>
+          <v-btn
+            icon="mdi-chevron-left"
+            size="x-small"
+            :disabled="emails.prev_page === null"
+            @click="page = emails.prev_page"
+          />
+          <v-btn
+            icon="mdi-chevron-right"
+            size="x-small"
+            :disabled="emails.next_page === null"
+            @click="page = emails.next_page"
+          />
+        </div>
+      </div>
     </v-toolbar>
   </v-card>
   <v-skeleton-loader v-if="loading" type="card@2"></v-skeleton-loader>
   <template v-else>
-    <v-card
-      v-for="email in emails"
-      :key="email.imapid"
-      density="compact"
-      class="mb-2"
-    >
-      <v-card-text
-        class="d-flex align-center"
-        :class="{ 'font-weight-bold': email.style === 'unseen' }"
+    <div class="emails position-absolute top-0 bottom-0 w-100 overflow-y-auto">
+      <v-card
+        v-for="email in emails.results"
+        :key="email.imapid"
+        density="compact"
+        class="mb-2 mx-1"
       >
-        <v-checkbox :value="email.imapid" hide-details />
-        <v-btn
-          :icon="email.flagged ? 'mdiu-star' : 'mdi-star-outline'"
-          variant="flat"
-        />
-        <div class="ml-4 clickable" @click="openEmail(email.imapid)">
-          <div>{{ email.subject }}</div>
-          <div class="mt-1 text-grey">
-            <span
-              v-if="email.from_address.name"
-              :title="email.from_address.address"
-              >{{ email.from_address.name }}</span
-            >
-            <span v-else>{{ email.from_address.address }}</span>
+        <v-card-text
+          class="d-flex align-center"
+          :class="{ 'font-weight-bold': email.style === 'unseen' }"
+        >
+          <v-checkbox v-model="selection" :value="email.imapid" hide-details />
+          <v-btn
+            :icon="email.flagged ? 'mdiu-star' : 'mdi-star-outline'"
+            variant="flat"
+          />
+          <div class="ml-4 clickable" @click="openEmail(email.imapid)">
+            <div>{{ email.subject }}</div>
+            <div class="mt-1 text-grey">
+              <span
+                v-if="email.from_address.name"
+                :title="email.from_address.address"
+                >{{ email.from_address.name }}</span
+              >
+              <span v-else>{{ email.from_address.address }}</span>
+            </div>
           </div>
-        </div>
-        <v-spacer />
-        <div class="text-right">
-          <div>{{ email.date }}</div>
-          <div class="mt-1">
-            <v-icon v-if="email.answered" icon="mdi-reply-outline" />
-            <v-icon v-if="email.forwarded" icon="mdi-share-outline" />
-            <v-icon v-if="email.attachments" icon="mdi-paperclip" />
-            <span class="text-grey">{{ $filesize(email.size) }}</span>
+          <v-spacer />
+          <div class="text-right">
+            <div>{{ email.date }}</div>
+            <div class="mt-1">
+              <v-icon v-if="email.answered" icon="mdi-reply-outline" />
+              <v-icon v-if="email.forwarded" icon="mdi-share-outline" />
+              <v-icon v-if="email.attachments" icon="mdi-paperclip" />
+              <span class="text-grey">{{ $filesize(email.size) }}</span>
+            </div>
           </div>
-        </div>
-      </v-card-text>
-    </v-card>
+        </v-card-text>
+      </v-card>
+    </div>
   </template>
 </template>
 
 <script setup>
 import { ref, watch } from 'vue'
-import { useRouter } from 'vue-router'
+import { useRouter, useRoute } from 'vue-router'
+import { useGettext } from 'vue3-gettext'
+import { useBusStore } from '@/stores'
 import api from '@/api/webmail'
 
 const props = defineProps({
@@ -71,11 +160,18 @@ const props = defineProps({
   },
 })
 
+const { $gettext } = useGettext()
+const { displayNotification } = useBusStore()
 const router = useRouter()
+const route = useRoute()
 
 const loading = ref(false)
-const emails = ref([])
+const emails = ref({})
+const page = ref(1)
 const search = ref('')
+const selectAll = ref(false)
+const selection = ref([])
+const working = ref(false)
 
 const openEmail = (emailid) => {
   router.push({
@@ -84,29 +180,103 @@ const openEmail = (emailid) => {
   })
 }
 
+const fetchEmails = () => {
+  emails.value = {}
+  loading.value = true
+  api
+    .getMailboxEmails(props.mailbox, { page: page.value })
+    .then((resp) => {
+      emails.value = resp.data
+      loading.value = false
+    })
+    .catch(() => {
+      loading.value = false
+    })
+}
+
+const toggleAllSelection = (value) => {
+  if (!value) {
+    selection.value = []
+  } else {
+    selection.value = emails.value.results.map((email) => email.imapid)
+  }
+}
+
+const deleteSelection = () => {
+  if (!selection.value.length) {
+    return
+  }
+  working.value = true
+  api.deleteSelection(route.query.mailbox, selection.value).then(() => {
+    working.value = false
+    displayNotification({ msg: $gettext('Message(s) deleted') })
+    fetchEmails()
+  })
+}
+
+const markSelectionAsJunk = () => {
+  if (!selection.value.length) {
+    return
+  }
+  working.value = true
+  api.markSelectionAsJunk(route.query.mailbox, selection.value).then(() => {
+    working.value = false
+    displayNotification({ msg: $gettext('Message(s) marked as junk') })
+    fetchEmails()
+  })
+}
+
+const markSelectionAsNotJunk = () => {
+  if (!selection.value.length) {
+    return
+  }
+  working.value = true
+  api.markSelectionAsNotJunk(route.query.mailbox, selection.value).then(() => {
+    working.value = false
+    displayNotification({ msg: $gettext('Message(s) marked as not junk') })
+    fetchEmails()
+  })
+}
+
+const flagSelection = (status) => {
+  if (!selection.value.length) {
+    return
+  }
+  working.value = true
+  api.flagSelection(route.query.mailbox, selection.value, status).then(() => {
+    working.value = false
+    selection.value = []
+    displayNotification({ msg: $gettext('Message(s) flagged') })
+    fetchEmails()
+  })
+}
+
 watch(
   () => props.mailbox,
-  (value) => {
-    emails.value = []
-    loading.value = true
-    api
-      .getMailboxEmails(value, {})
-      .then((resp) => {
-        emails.value = resp.data
-        loading.value = false
-      })
-      .catch(() => {
-        loading.value = false
-      })
+  () => {
+    fetchEmails()
   },
   { immediate: true }
 )
+watch(selection, () => {
+  if (!selection.value.length) {
+    selectAll.value = false
+  } else {
+    selectAll.value = true
+  }
+})
+watch(page, () => {
+  fetchEmails()
+})
 </script>
 
 <style lang="scss" scoped>
 .v-card-text {
   padding: 0;
 }
+.emails {
+  margin-top: 150px;
+}
 .clickable {
   cursor: pointer;
 }
diff --git a/frontend/src/components/webmail/MailboxList.vue b/frontend/src/components/webmail/MailboxList.vue
index 5588d374c..1d72a017e 100644
--- a/frontend/src/components/webmail/MailboxList.vue
+++ b/frontend/src/components/webmail/MailboxList.vue
@@ -13,7 +13,14 @@
         @mouseleave="setHover(mailbox, false)"
       >
         <v-icon :icon="iconByMailboxType[mailbox.type]" class="mr-4" />
-        {{ getMailboxLabel(mailbox) }}
+        <template v-if="mailbox.unseen > 0">
+          <span class="font-weight-bold">
+            {{ getMailboxLabel(mailbox) }} ({{ mailbox.unseen }})
+          </span>
+        </template>
+        <template v-else>
+          {{ getMailboxLabel(mailbox) }}
+        </template>
         <v-spacer />
         <v-btn
           v-if="mailbox.sub"
diff --git a/frontend/src/views/webmail/EmailView.vue b/frontend/src/views/webmail/EmailView.vue
index 278dbfa31..9db2d7978 100644
--- a/frontend/src/views/webmail/EmailView.vue
+++ b/frontend/src/views/webmail/EmailView.vue
@@ -1,5 +1,5 @@
 <template>
-  <div v-show="loaded" class="bg-white rounded-lg pa-4 mt-12">
+  <div v-show="loaded" class="bg-white rounded-lg pa-4 position-relative h-100">
     <v-toolbar color="white">
       <v-btn icon="mdi-arrow-left" size="small" variant="flat" @click="close" />
 
@@ -68,7 +68,7 @@
       </v-btn>
     </v-toolbar>
 
-    <div v-if="email" class="bg-white pa-4">
+    <div v-if="email" ref="headers" class="bg-white pa-4">
       <h2>{{ email.subject }}</h2>
       <div class="d-flex mt-2">
         <h3 v-if="email.from_address.fulladdress">
@@ -97,13 +97,13 @@
           </a>
         </template>
       </div>
-      <iframe class="email-frame" />
     </div>
+    <iframe class="email-frame" />
   </div>
 </template>
 
 <script setup>
-import { computed, nextTick, onMounted, ref, watch } from 'vue'
+import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { useGettext } from 'vue3-gettext'
 import { useBusStore } from '@/stores'
@@ -116,6 +116,7 @@ const router = useRouter()
 
 const enableLinks = ref(false)
 const email = ref(null)
+const headers = ref(null)
 const loaded = ref(false)
 const working = ref(false)
 
@@ -129,9 +130,14 @@ const recipients = computed(() => {
 })
 
 onMounted(() => {
+  window.addEventListener('resize', resizeEmailIframe)
   fetchMailContent()
 })
 
+onUnmounted(() => {
+  window.removeEventListener('resize', resizeEmailIframe)
+})
+
 watch(enableLinks, () => {
   fetchMailContent()
 })
@@ -143,6 +149,14 @@ const close = () => {
   })
 }
 
+const resizeEmailIframe = () => {
+  const iframe = document.querySelector('iframe')
+  const rect = headers.value.getBoundingClientRect()
+  iframe.style.top = `${rect.bottom}px`
+  iframe.style.width = `${rect.width - 24}px`
+  iframe.style.height = `${window.innerHeight - rect.bottom - 32}px`
+}
+
 const fetchMailContent = () => {
   const options = {
     dformat: 'html',
@@ -160,6 +174,7 @@ const fetchMailContent = () => {
         iframeDoc.write(email.value.body)
         iframeDoc.close()
         loaded.value = true
+        nextTick(resizeEmailIframe)
       })
     })
 }
@@ -220,10 +235,10 @@ const markEmailAsNotJunk = () => {
 
 <style>
 .email-frame {
-  width: 100%;
-  min-height: 1000px;
+  position: absolute !important;
+  left: 24px;
+  overflow-y: auto;
   border: none;
-  margin-top: 10px;
   background-color: #fff;
 }
 </style>
diff --git a/frontend/src/views/webmail/MailboxView.vue b/frontend/src/views/webmail/MailboxView.vue
index 48b6136d3..7390cf16a 100644
--- a/frontend/src/views/webmail/MailboxView.vue
+++ b/frontend/src/views/webmail/MailboxView.vue
@@ -1,8 +1,10 @@
 <template>
-  <div class="text-h5 ml-4">
-    {{ $gettext('Webmail') }}
+  <div class="position-relative h-100">
+    <div class="text-h5 ml-4">
+      {{ $gettext('Webmail') }}
+    </div>
+    <EmailList :mailbox="$route.query.mailbox || 'INBOX'" />
   </div>
-  <EmailList :mailbox="$route.query.mailbox || 'INBOX'" />
 </template>
 
 <script setup>
diff --git a/modoboa/webmail/lib/imaputils.py b/modoboa/webmail/lib/imaputils.py
index 6f1d09728..a918847d9 100644
--- a/modoboa/webmail/lib/imaputils.py
+++ b/modoboa/webmail/lib/imaputils.py
@@ -568,7 +568,7 @@ class IMAPconnector:
                 mb["unseen"] = count
         return md_mailboxes
 
-    def _add_flag(self, mbox: str, msgset, flag: str) -> None:
+    def _add_flag(self, mbox: str, msgset: list[str], flag: str) -> None:
         """Add flag to a messages set.
 
         :param mbox: the mailbox containing the messages
@@ -576,9 +576,9 @@ class IMAPconnector:
         :param flag: the flag to add
         """
         self.select_mailbox(mbox, False)
-        self._cmd("STORE", msgset, "+FLAGS", flag)
+        self._cmd("STORE", ",".join(msgset), "+FLAGS", flag)
 
-    def _remove_flag(self, mbox: str, msgset, flag: str) -> None:
+    def _remove_flag(self, mbox: str, msgset: list[str], flag: str) -> None:
         """Remove flag from a message set.
 
         :param mbox: the mailbox containing the messages
@@ -586,9 +586,9 @@ class IMAPconnector:
         :param flag: the flag to remove
         """
         self.select_mailbox(mbox, False)
-        self._cmd("STORE", msgset, "-FLAGS", flag)
+        self._cmd("STORE", ",".join(msgset), "-FLAGS", flag)
 
-    def mark_messages_unread(self, mbox: str, msgset) -> None:
+    def mark_messages_unread(self, mbox: str, msgset: list[str]) -> None:
         """Mark a set of messages as unread.
 
         :param mbox: the mailbox containing the messages
@@ -596,7 +596,7 @@ class IMAPconnector:
         """
         self._remove_flag(mbox, msgset, r"(\Seen)")
 
-    def mark_messages_read(self, mbox: str, msgset) -> None:
+    def mark_messages_read(self, mbox: str, msgset: list[str]) -> None:
         """Mark a set of messages as unread.
 
         :param mbox: the mailbox containing the messages
@@ -604,7 +604,7 @@ class IMAPconnector:
         """
         self._add_flag(mbox, msgset, r"(\Seen)")
 
-    def mark_messages_flagged(self, mbox: str, msgset) -> None:
+    def mark_messages_flagged(self, mbox: str, msgset: list[str]) -> None:
         """Mark a set of messages as flagged.
 
         :param mbox: the mailbox containing the messages
@@ -612,7 +612,7 @@ class IMAPconnector:
         """
         self._add_flag(mbox, msgset, r"(\Flagged)")
 
-    def mark_messages_unflagged(self, mbox: str, msgset) -> None:
+    def mark_messages_unflagged(self, mbox: str, msgset: list[str]) -> None:
         """Mark a set of messages as unflagged.
 
         :param mbox: the mailbox containing the messages
@@ -761,7 +761,6 @@ class IMAPconnector:
             msg = email.message_from_string(
                 msg_data[f"BODY[HEADER.FIELDS ({headers})]"]
             )
-            print(type(msg))
             msg["imapid"] = uid
             msg["size"] = msg_data["RFC822.SIZE"]
             if r"\Seen" not in msg_data["FLAGS"]:
diff --git a/modoboa/webmail/serializers.py b/modoboa/webmail/serializers.py
index a1b93667b..b39cd33ed 100644
--- a/modoboa/webmail/serializers.py
+++ b/modoboa/webmail/serializers.py
@@ -92,6 +92,16 @@ class EmailHeadersSerializer(serializers.Serializer):
         return imapheader.parse_date(obj["Date"])
 
 
+class PaginatedEmailListSerializer(serializers.Serializer):
+
+    count = serializers.IntegerField()
+    first_index = serializers.IntegerField()
+    last_index = serializers.IntegerField()
+    prev_page = serializers.IntegerField()
+    next_page = serializers.IntegerField()
+    results = EmailHeadersSerializer(many=True)
+
+
 class EmailSerializer(serializers.Serializer):
 
     subject = serializers.CharField(source="Subject")
@@ -117,3 +127,20 @@ class MoveSelectionSerializer(serializers.Serializer):
 
     def validate_selection(self, value):
         return [item for item in value if item.isdigit()]
+
+
+class FlagSelectionSerializer(serializers.Serializer):
+
+    mailbox = serializers.CharField()
+    selection = serializers.ListField(child=serializers.CharField())
+    status = serializers.ChoiceField(
+        choices=[
+            ("read", "Read"),
+            ("unread", "Unread"),
+            ("flagged", "Flagged"),
+            ("unflagged", "Unflagged"),
+        ]
+    )
+
+    def validate_selection(self, value):
+        return [item for item in value if item.isdigit()]
diff --git a/modoboa/webmail/viewsets.py b/modoboa/webmail/viewsets.py
index 3ef4c3372..5eaf103b0 100644
--- a/modoboa/webmail/viewsets.py
+++ b/modoboa/webmail/viewsets.py
@@ -15,7 +15,7 @@ class UserMailboxViewSet(viewsets.GenericViewSet):
     serializer_class = serializers.UserMailboxSerializer
 
     def list(self, request):
-        parent_mailbox = request.GET.get("mailbox", "")
+        parent_mailbox = request.GET.get("mailbox")
         imapc = lib.get_imapconnector(request)
         mboxes = imapc.getmboxes(request.user, parent_mailbox)
         serializer = serializers.UserMailboxSerializer(mboxes, many=True)
@@ -24,18 +24,36 @@ class UserMailboxViewSet(viewsets.GenericViewSet):
 
 class UserEmailViewSet(viewsets.GenericViewSet):
 
+    def get_serializer_class(self):
+        if self.action == "list":
+            return serializers.PaginatedEmailListSerializer
+        if self.action in ["delete", "mark_as_junk", "mark_as_not_junk"]:
+            return serializers.MoveSelectionSerializer
+        if self.action == "flag":
+            return serializers.FlagSelectionSerializer
+        return serializers.EmailSerializer
+
     def list(self, request):
         mailbox = request.GET.get("mailbox", "INBOX")
         imapc = lib.get_imapconnector(request)
-        paginator = Paginator(
-            imapc.messages_count(mbox=mailbox),
-            request.user.parameters.get_value("messages_per_page"),
-        )
-        page = paginator.getpage(1)
+        total = imapc.messages_count(mbox=mailbox)
+        messages_per_page = request.user.parameters.get_value("messages_per_page")
+        paginator = Paginator(total, messages_per_page)
+        page_num = int(request.GET.get("page", 1))
+        page = paginator.getpage(int(request.GET.get("page", 1)))
         content = imapc.fetch(page.id_start, page.id_stop, mbox=mailbox)
         content = [dict(msg) for msg in content]
         serializer = serializers.EmailHeadersSerializer(content, many=True)
-        return response.Response(serializer.data)
+        return response.Response(
+            {
+                "count": total,
+                "first_index": page_num * messages_per_page,
+                "last_index": (page_num * messages_per_page) + len(content),
+                "prev_page": page.previous_page_number if page.has_previous else None,
+                "next_page": page.next_page_number if page.has_next else None,
+                "results": serializer.data,
+            }
+        )
 
     def move_selection(self, request, destination: str) -> int:
         """Move selected messages to the given mailbox."""
@@ -80,6 +98,20 @@ class UserEmailViewSet(viewsets.GenericViewSet):
         count = self.move_selection(request, "INBOX")
         return response.Response({"count": count})
 
+    @action(
+        methods=["post"],
+        detail=False,
+        serializer_class=serializers.FlagSelectionSerializer,
+    )
+    def flag(self, request):
+        serializer = serializers.FlagSelectionSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        imapc = lib.get_imapconnector(request)
+        getattr(imapc, f"mark_messages_{serializer.validated_data['status']}")(
+            serializer.validated_data["mailbox"], serializer.validated_data["selection"]
+        )
+        return response.Response({"count": len(serializer.validated_data["selection"])})
+
     @action(methods=["get"], detail=False)
     def content(self, request):
         mailbox = request.GET.get("mailbox", "INBOX")