diff --git a/models/chunter/src/index.ts b/models/chunter/src/index.ts
index f8405261a8..f570e4cd0a 100644
--- a/models/chunter/src/index.ts
+++ b/models/chunter/src/index.ts
@@ -74,7 +74,10 @@ export { chunterOperation } from './migration'
 export const DOMAIN_CHUNTER = 'chunter' as Domain
 
 @Model(chunter.class.ChunterSpace, core.class.Space)
-export class TChunterSpace extends TSpace implements ChunterSpace {}
+export class TChunterSpace extends TSpace implements ChunterSpace {
+  @Prop(PropCollection(activity.class.ActivityMessage), chunter.string.Messages)
+    messages?: number
+}
 
 @Model(chunter.class.Channel, chunter.class.ChunterSpace)
 @UX(chunter.string.Channel, chunter.icon.Hashtag, undefined, undefined, undefined, chunter.string.Channels)
diff --git a/models/chunter/src/migration.ts b/models/chunter/src/migration.ts
index 7faa157a29..5ab8d328c6 100644
--- a/models/chunter/src/migration.ts
+++ b/models/chunter/src/migration.ts
@@ -13,7 +13,7 @@
 // limitations under the License.
 //
 
-import { chunterId, type ThreadMessage } from '@hcengineering/chunter'
+import { chunterId, type DirectMessage, type ThreadMessage } from '@hcengineering/chunter'
 import core, {
   type Account,
   TxOperations,
@@ -33,12 +33,13 @@ import {
 } from '@hcengineering/model'
 import activity, { migrateMessagesSpace, DOMAIN_ACTIVITY } from '@hcengineering/model-activity'
 import notification from '@hcengineering/notification'
-import contactPlugin, { type PersonAccount } from '@hcengineering/contact'
-import { DOMAIN_NOTIFICATION } from '@hcengineering/model-notification'
+import contactPlugin, { type Person, type PersonAccount } from '@hcengineering/contact'
+import { DOMAIN_DOC_NOTIFY, DOMAIN_NOTIFICATION } from '@hcengineering/model-notification'
+import { type DocUpdateMessage } from '@hcengineering/activity'
+import { DOMAIN_SPACE } from '@hcengineering/model-core'
 
 import chunter from './plugin'
 import { DOMAIN_CHUNTER } from './index'
-import { type DocUpdateMessage } from '@hcengineering/activity'
 
 export const DOMAIN_COMMENT = 'comment' as Domain
 
@@ -239,6 +240,53 @@ async function removeWrongActivity (client: MigrationClient): Promise<void> {
   })
 }
 
+async function removeDuplicatedDirects (client: MigrationClient): Promise<void> {
+  const directs = await client.find<DirectMessage>(DOMAIN_SPACE, { _class: chunter.class.DirectMessage })
+  const personAccounts = await client.model.findAll<PersonAccount>(contactPlugin.class.PersonAccount, {})
+  const personByAccount = new Map(personAccounts.map((it) => [it._id, it.person]))
+
+  const accountsToPersons = (members: Ref<Account>[]): Ref<Person>[] => {
+    const personsSet = new Set(
+      members
+        .map((it) => personByAccount.get(it as Ref<PersonAccount>))
+        .filter((it): it is Ref<Person> => it !== undefined)
+    )
+    return Array.from(personsSet)
+  }
+
+  const map: Map<string, DirectMessage[]> = new Map<string, DirectMessage[]>()
+  const toRemove: Ref<DirectMessage>[] = []
+
+  for (const direct of directs) {
+    const persons = accountsToPersons(direct.members)
+
+    if (persons.length === 0) {
+      toRemove.push(direct._id)
+      continue
+    }
+
+    const key = persons.sort().join(',')
+
+    if (!map.has(key)) {
+      map.set(key, [direct])
+    } else {
+      map.get(key)?.push(direct)
+    }
+  }
+
+  for (const [, directs] of map) {
+    if (directs.length === 1) continue
+    const toSave = directs.reduce((acc, it) => ((it.messages ?? 0) > (acc.messages ?? 0) ? it : acc), directs[0])
+    const rest = directs.filter((it) => it._id !== toSave._id)
+    toRemove.push(...rest.map((it) => it._id))
+  }
+
+  await client.deleteMany(DOMAIN_SPACE, { _id: { $in: toRemove } })
+  await client.deleteMany(DOMAIN_ACTIVITY, { attachedTo: { $in: toRemove } })
+  await client.deleteMany(DOMAIN_ACTIVITY, { objectId: { $in: toRemove } })
+  await client.deleteMany(DOMAIN_DOC_NOTIFY, { objectId: { $in: toRemove } })
+}
+
 export const chunterOperation: MigrateOperation = {
   async migrate (client: MigrationClient): Promise<void> {
     await tryMigrate(client, chunterId, [
@@ -283,6 +331,12 @@ export const chunterOperation: MigrateOperation = {
         func: async (client) => {
           await removeWrongActivity(client)
         }
+      },
+      {
+        state: 'remove-duplicated-directs-v1',
+        func: async (client) => {
+          await removeDuplicatedDirects(client)
+        }
       }
     ])
   },
diff --git a/plugins/chunter-resources/src/components/chat/create/CreateDirectChat.svelte b/plugins/chunter-resources/src/components/chat/create/CreateDirectChat.svelte
index 08bcb2400b..e777e90381 100644
--- a/plugins/chunter-resources/src/components/chat/create/CreateDirectChat.svelte
+++ b/plugins/chunter-resources/src/components/chat/create/CreateDirectChat.svelte
@@ -17,9 +17,9 @@
   import { deepEqual } from 'fast-equals'
 
   import { DirectMessage } from '@hcengineering/chunter'
-  import contact, { Employee, PersonAccount } from '@hcengineering/contact'
+  import contact, { Employee, Person, PersonAccount } from '@hcengineering/contact'
   import core, { getCurrentAccount, Ref } from '@hcengineering/core'
-  import { SelectUsersPopup } from '@hcengineering/contact-resources'
+  import { personIdByAccountId, SelectUsersPopup } from '@hcengineering/contact-resources'
   import notification from '@hcengineering/notification'
   import presentation, { createQuery, getClient } from '@hcengineering/presentation'
   import { Modal, showPopup } from '@hcengineering/ui'
@@ -55,15 +55,31 @@
     const accIds = [myAcc._id, ...employeeAccounts.filter(({ _id }) => _id !== myAcc._id).map(({ _id }) => _id)].sort()
 
     const existingDms = await client.findAll(chunter.class.DirectMessage, {})
+    const newDirectPersons = Array.from(new Set([...employeeIds, myAcc.person])).sort()
 
     let direct: DirectMessage | undefined
+
     for (const dm of existingDms) {
-      if (deepEqual(dm.members.sort(), accIds)) {
+      const existDirectPersons = Array.from(
+        new Set(dm.members.map((id) => $personIdByAccountId.get(id as Ref<PersonAccount>)))
+      )
+        .filter((person): person is Ref<Person> => person !== undefined)
+        .sort()
+      if (deepEqual(existDirectPersons, newDirectPersons)) {
         direct = dm
         break
       }
     }
 
+    const existingMembers = direct?.members
+    const missingAccounts = existingMembers !== undefined ? accIds.filter((id) => !existingMembers.includes(id)) : []
+
+    if (direct !== undefined && missingAccounts.length > 0) {
+      await client.updateDoc(chunter.class.DirectMessage, direct.space, direct._id, {
+        members: [...direct.members, ...missingAccounts]
+      })
+    }
+
     const dmId =
       direct?._id ??
       (await client.createDoc(chunter.class.DirectMessage, core.space.Space, {
@@ -75,12 +91,13 @@
       }))
 
     const context = await client.findOne(notification.class.DocNotifyContext, {
-      person: myAcc.person,
+      user: myAcc._id,
       objectId: dmId,
       objectClass: chunter.class.DirectMessage
     })
 
     if (context !== undefined) {
+      dispatch('close')
       openChannel(dmId, chunter.class.DirectMessage)
 
       return
@@ -97,6 +114,7 @@
     })
 
     openChannel(dmId, chunter.class.DirectMessage)
+    dispatch('close')
   }
 
   function handleCancel (): void {
diff --git a/plugins/chunter/src/index.ts b/plugins/chunter/src/index.ts
index 1c87455e66..b027c3f459 100644
--- a/plugins/chunter/src/index.ts
+++ b/plugins/chunter/src/index.ts
@@ -25,7 +25,9 @@ import { Person, ChannelProvider as SocialChannelProvider } from '@hcengineering
 /**
  * @public
  */
-export interface ChunterSpace extends Space {}
+export interface ChunterSpace extends Space {
+  messages?: number
+}
 
 /**
  * @public
diff --git a/plugins/contact-resources/src/utils.ts b/plugins/contact-resources/src/utils.ts
index 096de69a57..ad63124e20 100644
--- a/plugins/contact-resources/src/utils.ts
+++ b/plugins/contact-resources/src/utils.ts
@@ -16,38 +16,38 @@
 
 import {
   AvatarType,
+  type Channel,
+  type ChannelProvider,
+  type Contact,
   contactId,
+  type Employee,
   formatName,
   getFirstName,
   getLastName,
   getName,
-  type Channel,
-  type ChannelProvider,
-  type Contact,
-  type Employee,
   type Person,
   type PersonAccount
 } from '@hcengineering/contact'
 import core, {
-  getCurrentAccount,
-  toIdMap,
   type Account,
+  AggregateValue,
+  AggregateValueData,
   type Class,
   type Client,
   type Doc,
+  type DocumentQuery,
+  getCurrentAccount,
+  type Hierarchy,
   type IdMap,
+  matchQuery,
   type ObjQueryType,
   type Ref,
+  type Space,
   type Timestamp,
+  toIdMap,
   type TxOperations,
   type UserStatus,
-  type WithLookup,
-  AggregateValue,
-  type Space,
-  type Hierarchy,
-  type DocumentQuery,
-  AggregateValueData,
-  matchQuery
+  type WithLookup
 } from '@hcengineering/core'
 import notification, { type DocNotifyContext, type InboxNotification } from '@hcengineering/notification'
 import { getEmbeddedLabel, getResource, translate } from '@hcengineering/platform'
@@ -61,8 +61,8 @@ import {
   type ResolvedLocation,
   type TabItem
 } from '@hcengineering/ui'
-import view, { type GrouppingManager, type Filter } from '@hcengineering/view'
-import { FilterQuery, accessDeniedStore } from '@hcengineering/view-resources'
+import view, { type Filter, type GrouppingManager } from '@hcengineering/view'
+import { accessDeniedStore, FilterQuery } from '@hcengineering/view-resources'
 import { derived, get, writable } from 'svelte/store'
 
 import contact from './plugin'
@@ -305,6 +305,10 @@ export const channelProviders = writable<ChannelProvider[]>([])
 
 export const personAccountPersonByIdStore = writable<IdMap<WithLookup<Person>>>(new Map())
 
+export const personIdByAccountId = derived(personAccountByIdStore, (vals) => {
+  return new Map<Ref<PersonAccount>, Ref<Person>>(Array.from(vals.values()).map((it) => [it._id, it.person]))
+})
+
 export const statusByUserStore = writable<Map<Ref<Account>, UserStatus>>(new Map())
 
 export const personByIdStore = derived([personAccountPersonByIdStore, employeeByIdStore], (vals) => {