Fix: Strict RFC822.SIZE == BODY[] length check discards good mail

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.0.5] - 2026-06-27
+
+### Added
+
+### Changed
+
+### Fixed
+- Strict `RFC822.SIZE` == `BODY[]` length check discards good mail.
+
 ## [1.0.4] - 2026-06-21
 
 ### Added

Cargo.lock

@@ -2892,7 +2892,7 @@ dependencies = [
 
 [[package]]
 name = "vandelay"
-version = "1.0.4"
+version = "1.0.5"
 dependencies = [
  "base64",
  "blake3",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "vandelay"
 description = "JMAP account migration utility"
-version = "1.0.4"
+version = "1.0.5"
 authors = ["Stalwart Labs LLC <[email protected]>"]
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/stalwartlabs/vandelay"

src/dav/discover.rs

@@ -222,7 +222,7 @@ fn try_via_principal(
                     return Ok(None);
                 }
                 Err(JmapError::RetriesExhausted(_)) | Err(JmapError::Malformed(_)) => {
-                    return Ok(None)
+                    return Ok(None);
                 }
                 Err(e) => return Err(DiscoveryError::Transport(e)),
             };

src/db/roles.rs

@@ -75,7 +75,9 @@ mod tests {
         let conn = mem();
         let id = insert(&conn, "Sent", Some("sent"));
         assert_eq!(
-            unique_role(&conn, Some("sent"), Some(id)).unwrap().as_deref(),
+            unique_role(&conn, Some("sent"), Some(id))
+                .unwrap()
+                .as_deref(),
             Some("sent")
         );
     }

src/sync/export/tree.rs

@@ -160,8 +160,7 @@ pub fn reconcile(
         .unwrap_or(0);
 
     let mut uploader = Uploader::new(net, &ctx.conn);
-    let mut taken_roles: HashSet<String> =
-        targets.iter().filter_map(|t| t.role.clone()).collect();
+    let mut taken_roles: HashSet<String> = targets.iter().filter_map(|t| t.role.clone()).collect();
     let interleave = ty == ObjectType::FileNode;
     for d in 0..=max_depth {
         let level: Vec<&LocalNode> = to_create

src/sync/import_imap/coordinator.rs

@@ -582,12 +582,7 @@ fn upsert_mailboxes(
             tx.execute(
                 "INSERT INTO mailboxes (name, parent_id, role, sort_order, is_subscribed)
                  VALUES (?1, ?2, ?3, 0, ?4)",
-                params![
-                    folder.leaf,
-                    parent_local,
-                    role,
-                    folder.subscribed as i64
-                ],
+                params![folder.leaf, parent_local, role, folder.subscribed as i64],
             )?;
             let new_id = tx.last_insert_rowid();
             db::imap_ids::insert_mailbox(&tx, source_id, &folder.name, new_id)?;
@@ -927,12 +922,10 @@ fn insert_single_message(
             logger,
             LEVEL_DEFAULT,
             &format!(
-                "folder {folder:?} uid {uid}: BODY[] {} bytes vs RFC822.SIZE {declared_size}, skipping",
+                "folder {folder:?} uid {uid}: BODY[] {} bytes vs RFC822.SIZE {declared_size}, importing the fetched literal",
                 body.len()
             ),
         );
-        counts.skipped += 1;
-        return Ok(());
     }
     let translation = translate_flags(&attrs.flags, include_deleted);
     if translation.has_deleted_flag && !include_deleted {

tests/mock_imap.rs

@@ -707,7 +707,7 @@ fn coordinator_falls_back_to_uid_fetch_when_search_all_bad() {
 }
 
 #[test]
-fn coordinator_skips_message_on_size_mismatch() {
+fn coordinator_imports_message_despite_size_mismatch() {
     let control = control_script_one_folder(100, 2, &[1]);
     let worker: Script = Box::new(|conn: &mut MockConn| -> std::io::Result<()> {
         auth_preamble(conn, "IMAP4rev2 LITERAL+ AUTH=PLAIN")?;
@@ -734,8 +734,10 @@ fn coordinator_skips_message_on_size_mismatch() {
         .iter()
         .find(|(k, _)| *k == "email")
         .unwrap();
-    assert_eq!(email.1.skipped, 1);
-    assert_eq!(email.1.created, 0);
+    assert_eq!(email.1.skipped, 0);
+    assert_eq!(email.1.created, 1);
+    let dbc = Connection::open(&archive).unwrap();
+    assert_eq!(count(&dbc, "emails"), 1);
 }
 
 fn single_inbox_scripts(uidvalidity: u32, uidnext: u32, body: &'static [u8]) -> Vec<Script> {

tests/mock_sync.rs

@@ -863,7 +863,10 @@ fn import_missing_email_blob_is_skipped_and_counted_once() {
         .find(|(t, _)| *t == "Email")
         .map(|(_, c)| c.clone())
         .expect("email counts");
-    assert_eq!(email.fetched, 1, "only the email with a present blob imports");
+    assert_eq!(
+        email.fetched, 1,
+        "only the email with a present blob imports"
+    );
     assert_eq!(
         email.failed, 1,
         "a missing blob counts the email failed exactly once, not twice"
@@ -2571,7 +2574,10 @@ fn export_duplicate_role_mailbox_created_as_plain_folder_keeping_subtree() {
         .find(|(t, _)| *t == "Mailbox")
         .map(|(_, c)| c.clone())
         .expect("mailbox counts");
-    assert_eq!(counts.skipped, 2, "Inbox and Sent match existing role mailboxes");
+    assert_eq!(
+        counts.skipped, 2,
+        "Inbox and Sent match existing role mailboxes"
+    );
     assert_eq!(
         counts.created, 2,
         "duplicate-role folder and its child are both created"