diff --git a/app/Policies/ConversationPolicy.php b/app/Policies/ConversationPolicy.php
index 7bef60740..b87fd3bc3 100644
--- a/app/Policies/ConversationPolicy.php
+++ b/app/Policies/ConversationPolicy.php
@@ -26,7 +26,7 @@ public function view(User $user, Conversation $conversation)
         } else {
             if ($conversation->mailbox->users->contains($user)) {
                 // Maybe user can see only assigned conversations.
-                if ($conversation->user_id != $user->id
+                if (!\Eventy::filter('conversation.is_user_assignee', $conversation->user_id == $user->id, $conversation, $user->id)
                     && $user->hasManageMailboxPermission($conversation->mailbox_id, Mailbox::ACCESS_PERM_ASSIGNED)
                 ) {
                     return false;
@@ -53,7 +53,7 @@ public function viewCached(User $user, Conversation $conversation)
         } else {
             if ($conversation->mailbox->users_cached->contains($user)) {
                 // Maybe user can see only assigned conversations.
-                if ($conversation->user_id != $user->id
+                if (!\Eventy::filter('conversation.is_user_assignee', $conversation->user_id == $user->id, $conversation, $user->id)
                     && $user->hasManageMailboxPermission($conversation->mailbox_id, Mailbox::ACCESS_PERM_ASSIGNED)
                 ) {
                     return false;