diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c3dafb0..3ed623ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@ If you are upgrading from v0.16.x, replace the binary (or run `docker pull`). If
   - `filter: null` rejected as `notRequest` on `/query` and `/queryChanges`.
   - `Email/query` total miscount when `collapseThreads` is enabled.
   - `SearchSnippet/get` response structure.
+  - `VacationResponse` singleton handling.
 - OIDC: Add default domain name to groups that are not email addresses.
 - RocksDB: Enable blob garbage collection to reclaim disk space from deleted blobs.
 
diff --git a/crates/jmap/src/vacation/set.rs b/crates/jmap/src/vacation/set.rs
index fca4c374..cfd8b235 100644
--- a/crates/jmap/src/vacation/set.rs
+++ b/crates/jmap/src/vacation/set.rs
@@ -7,9 +7,7 @@
 use super::get::VacationResponseGet;
 use crate::changes::state::StateManager;
 use common::{Server, auth::AccessToken, storage::index::ObjectIndexBuilder};
-use email::sieve::{
-    SieveScript, VacationResponse, delete::SieveScriptDelete, ingest::SieveScriptIngest,
-};
+use email::sieve::{SieveScript, VacationResponse, ingest::SieveScriptIngest};
 use jmap_proto::{
     error::set::{SetError, SetErrorType},
     method::set::{SetRequest, SetResponse},
@@ -60,10 +58,13 @@ impl VacationResponseSet for Server {
                 )
                 .await?,
             );
-        let will_destroy = request.unwrap_destroy().into_valid().collect::<Vec<_>>();
+
+        for id in request.unwrap_destroy().into_valid() {
+            response.not_destroyed.append(id, SetError::singleton());
+        }
 
         // Process set or update requests
-        let mut create_id = None;
+        let create_id = None;
         let mut changes = None;
         match (request.create, request.update) {
             (Some(create), Some(update)) if !create.is_empty() && !update.is_empty() => {
@@ -72,37 +73,14 @@ impl VacationResponseSet for Server {
                     .details("Creating and updating on the same request is not allowed."));
             }
             (Some(create), _) if !create.is_empty() => {
-                for (id, obj) in create {
-                    if will_destroy.contains(&Id::singleton()) {
-                        response.not_created.append(
-                            id,
-                            SetError::new(SetErrorType::WillDestroy)
-                                .with_description("ID will be destroyed."),
-                        );
-                    } else if create_id.is_some() {
-                        response.not_created.append(
-                            id,
-                            SetError::forbidden()
-                                .with_description("Only one object can be created."),
-                        );
-                    } else {
-                        create_id = Some(id);
-                        changes = Some(obj);
-                    }
+                for (id, _obj) in create {
+                    response.not_created.append(id, SetError::singleton());
                 }
             }
             (_, Some(update)) if !update.is_empty() => {
                 for (id, obj) in update.into_valid() {
                     if id.is_singleton() {
-                        if !will_destroy.contains(&id) {
-                            changes = Some(obj);
-                        } else {
-                            response.not_updated.append(
-                                id,
-                                SetError::new(SetErrorType::WillDestroy)
-                                    .with_description("ID will be destroyed."),
-                            );
-                        }
+                        changes = Some(obj);
                     } else {
                         response.not_updated.append(
                             id,
@@ -112,9 +90,7 @@ impl VacationResponseSet for Server {
                 }
             }
             _ => {
-                if will_destroy.is_empty() {
-                    return Ok(response);
-                }
+                return Ok(response);
             }
         }
 
@@ -340,37 +316,6 @@ impl VacationResponseSet for Server {
             } else {
                 response.updated.append(Id::singleton(), None);
             }
-        } else if !will_destroy.is_empty() {
-            for id in will_destroy {
-                if id.is_singleton()
-                    && let Some(document_id) = self.get_vacation_sieve_script_id(account_id).await?
-                {
-                    self.sieve_script_delete(account_id, document_id, access_token, &mut batch)
-                        .await?;
-                    if active_script_id == Some(document_id) {
-                        batch
-                            .with_collection(Collection::Principal)
-                            .with_document(0)
-                            .clear(PrincipalField::ActiveScriptId);
-                    }
-
-                    response.destroyed.push(id);
-                    break;
-                }
-
-                response.not_destroyed.append(id, SetError::not_found());
-            }
-
-            // Write changes
-            if !batch.is_empty() {
-                response.new_state = Some(
-                    self.commit_batch(batch)
-                        .await
-                        .and_then(|ids| ids.last_change_id(account_id))
-                        .caused_by(trc::location!())?
-                        .into(),
-                );
-            }
         }
 
         Ok(response)