diff --git a/models/server-calendar/src/index.ts b/models/server-calendar/src/index.ts
index 53b8353560..6c15c023e6 100644
--- a/models/server-calendar/src/index.ts
+++ b/models/server-calendar/src/index.ts
@@ -41,14 +41,6 @@ export function createModel (builder: Builder): void {
     }
   })
 
-  builder.createDoc(serverCore.class.Trigger, core.space.Model, {
-    trigger: serverCalendar.trigger.OnEvent,
-    txMatch: {
-      _class: core.class.TxCollectionCUD,
-      objectClass: calendar.class.Event
-    }
-  })
-
   builder.mixin<Class<Doc>, ObjectDDParticipant>(
     core.class.Doc,
     core.class.Class,
diff --git a/server-plugins/calendar-resources/src/index.ts b/server-plugins/calendar-resources/src/index.ts
index a09695c799..d89c0546ee 100644
--- a/server-plugins/calendar-resources/src/index.ts
+++ b/server-plugins/calendar-resources/src/index.ts
@@ -13,7 +13,8 @@
 // limitations under the License.
 //
 
-import calendar, { Calendar, Event, ReccuringEvent } from '@hcengineering/calendar'
+import calendar, { Calendar, Event } from '@hcengineering/calendar'
+import { PersonAccount } from '@hcengineering/contact'
 import core, {
   Class,
   Doc,
@@ -23,16 +24,12 @@ import core, {
   Hierarchy,
   Ref,
   Tx,
-  TxCUD,
   TxCreateDoc,
-  TxProcessor,
-  TxRemoveDoc,
-  TxUpdateDoc
+  TxProcessor
 } from '@hcengineering/core'
 import { getResource } from '@hcengineering/platform'
 import { TriggerControl } from '@hcengineering/server-core'
 import { getHTMLPresenter, getTextPresenter } from '@hcengineering/server-notification-resources'
-import contact, { PersonAccount } from '@hcengineering/contact'
 
 /**
  * @public
@@ -104,109 +101,6 @@ export async function OnPersonAccountCreate (tx: Tx, control: TriggerControl): P
   return [res]
 }
 
-async function onEventCreate (tx: Tx, control: TriggerControl): Promise<Tx[]> {
-  const ctx = TxProcessor.extractTx(tx) as TxCreateDoc<Event>
-  const ev = TxProcessor.createDoc2Doc(ctx)
-
-  const res: Tx[] = []
-  for (const participant of ev.participants) {
-    const acc = (await control.modelDb.findAll(contact.class.PersonAccount, { person: participant }))[0]
-    if (acc === undefined) continue
-    if (acc._id === ev.createdBy ?? ev.modifiedBy) continue
-    const { _id, _class, space, modifiedBy, modifiedOn, ...data } = ev
-    const innerTx = control.txFactory.createTxCreateDoc(_class, `${acc._id}_calendar` as Ref<Calendar>, {
-      ...data,
-      access: 'reader'
-    })
-    res.push(
-      control.txFactory.createTxCollectionCUD(ev.attachedToClass, ev.attachedTo, ev.space, ev.collection, innerTx)
-    )
-  }
-
-  return res
-}
-
-async function onEventUpdate (tx: Tx, control: TriggerControl): Promise<Tx[]> {
-  const ctx = TxProcessor.extractTx(tx) as TxUpdateDoc<Event>
-  const ev = (await control.findAll(calendar.class.Event, { _id: ctx.objectId }))[0]
-
-  const res: Tx[] = []
-  if (ev !== undefined) {
-    const events = await control.findAll(calendar.class.Event, { eventId: ev.eventId, _id: { $ne: ev._id } })
-    for (const event of events) {
-      const innerTx = control.txFactory.createTxUpdateDoc(event._class, event.space, event._id, ctx.operations)
-      res.push(
-        control.txFactory.createTxCollectionCUD(
-          event.attachedToClass,
-          event.attachedTo,
-          event.space,
-          event.collection,
-          innerTx
-        )
-      )
-    }
-  }
-  return res
-}
-
-async function onEventRemove (tx: Tx, control: TriggerControl): Promise<Tx[]> {
-  const ctx = TxProcessor.extractTx(tx) as TxRemoveDoc<Event>
-  const event = control.removedMap.get(ctx.objectId)
-  const res: Tx[] = []
-  if (event !== undefined) {
-    const events = await control.findAll(calendar.class.Event, { eventId: (event as Event).eventId })
-    for (const event of events) {
-      const innerTx = control.txFactory.createTxRemoveDoc(event._class, event.space, event._id)
-      res.push(
-        control.txFactory.createTxCollectionCUD(
-          event.attachedToClass,
-          event.attachedTo,
-          event.space,
-          event.collection,
-          innerTx
-        )
-      )
-    }
-    if (event._class === calendar.class.ReccuringEvent) {
-      const childs = await control.findAll(calendar.class.ReccuringInstance, {
-        recurringEventId: (event as ReccuringEvent).eventId
-      })
-      for (const child of childs) {
-        const innerTx = control.txFactory.createTxRemoveDoc(child._class, child.space, child._id)
-        res.push(
-          control.txFactory.createTxCollectionCUD(
-            child.attachedToClass,
-            child.attachedTo,
-            child.space,
-            child.collection,
-            innerTx
-          )
-        )
-      }
-    }
-  }
-
-  return res
-}
-
-/**
- * @public
- */
-export async function OnEvent (tx: Tx, control: TriggerControl): Promise<Tx[]> {
-  if (tx.space === core.space.DerivedTx) return []
-  const ctx = TxProcessor.extractTx(tx) as TxCUD<Event>
-  if (!control.hierarchy.isDerived(ctx.objectClass, calendar.class.Event)) return []
-  switch (ctx._class) {
-    case core.class.TxCreateDoc:
-      return await onEventCreate(ctx, control)
-    case core.class.TxUpdateDoc:
-      return await onEventUpdate(ctx, control)
-    case core.class.TxRemoveDoc:
-      return await onEventRemove(ctx, control)
-  }
-  return []
-}
-
 // eslint-disable-next-line @typescript-eslint/explicit-function-return-type
 export default async () => ({
   function: {
@@ -215,7 +109,6 @@ export default async () => ({
     FindReminders
   },
   trigger: {
-    OnEvent,
     OnPersonAccountCreate
   }
 })
diff --git a/server-plugins/calendar/src/index.ts b/server-plugins/calendar/src/index.ts
index 4de699ac4b..cf632b612f 100644
--- a/server-plugins/calendar/src/index.ts
+++ b/server-plugins/calendar/src/index.ts
@@ -45,7 +45,6 @@ export default plugin(serverCalendarId, {
     >
   },
   trigger: {
-    OnEvent: '' as Resource<TriggerFunc>,
     OnPersonAccountCreate: '' as Resource<TriggerFunc>
   }
 })