diff --git a/addons/calendar/models/mail_activity.py b/addons/calendar/models/mail_activity.py
index d3dff3f9f67..da30c6629d4 100644
--- a/addons/calendar/models/mail_activity.py
+++ b/addons/calendar/models/mail_activity.py
@@ -22,6 +22,8 @@ class MailActivity(models.Model):
             'default_activity_ids': [(6, 0, self.ids)],
             'default_partner_ids': self.user_id.partner_id.ids,
             'default_user_id': self.user_id.id,
+            'initial_date': self.date_deadline,
+            'default_calendar_event_id': self.calendar_event_id.id,
         }
         return action
 
diff --git a/addons/calendar/static/src/views/attendee_calendar/common/attendee_calendar_common_renderer.js b/addons/calendar/static/src/views/attendee_calendar/common/attendee_calendar_common_renderer.js
index 5fe511fb28d..4e667fe4464 100644
--- a/addons/calendar/static/src/views/attendee_calendar/common/attendee_calendar_common_renderer.js
+++ b/addons/calendar/static/src/views/attendee_calendar/common/attendee_calendar_common_renderer.js
@@ -36,6 +36,9 @@ export class AttendeeCalendarCommonRenderer extends CalendarCommonRenderer {
         const record = this.props.model.records[event.id];
 
         if (record) {
+            if (this.env.searchModel?.context?.default_calendar_event_id === parseInt(event.id)) {
+                this.openPopover(info.el, record);
+            }
             if (record.rawRecord.is_highlighted) {
                 el.classList.add("o_event_highlight");
             }