Self heal on blobNotFound errors when exporting data (closes #13)

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/).
 
+## [1.0.6] - 2026-06-XX
+
+### Added
+
+### Changed
+
+### Fixed
+- Self heal on `blobNotFound` errors when exporting data (#13).
+
 ## [1.0.5] - 2026-06-27
 
 ### Added

Cargo.lock

@@ -2892,7 +2892,7 @@ dependencies = [
 
 [[package]]
 name = "vandelay"
-version = "1.0.5"
+version = "1.0.6"
 dependencies = [
  "base64",
  "blake3",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "vandelay"
 description = "JMAP account migration utility"
-version = "1.0.5"
+version = "1.0.6"
 authors = ["Stalwart Labs LLC <[email protected]>"]
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/stalwartlabs/vandelay"

src/sync/export.rs

@@ -60,6 +60,7 @@ struct Uploader<'a> {
     net: &'a Net,
     conn: &'a Connection,
     cache: HashMap<i64, JmapId>,
+    touched: Vec<i64>,
 }
 
 impl<'a> Uploader<'a> {
@@ -68,10 +69,12 @@ impl<'a> Uploader<'a> {
             net,
             conn,
             cache: HashMap::new(),
+            touched: Vec::new(),
         }
     }
 
     fn upload_with(&mut self, local_id: i64, content_type: &str) -> Result<JmapId, JmapError> {
+        self.touched.push(local_id);
         if let Some(id) = self.cache.get(&local_id) {
             return Ok(id.clone());
         }
@@ -93,6 +96,14 @@ impl<'a> Uploader<'a> {
         self.cache.insert(local_id, id.clone());
         Ok(id)
     }
+
+    fn invalidate(&mut self, local_id: i64) {
+        self.cache.remove(&local_id);
+    }
+
+    fn take_touched(&mut self) -> Vec<i64> {
+        std::mem::take(&mut self.touched)
+    }
 }
 
 impl BlobUpload for Uploader<'_> {
@@ -485,6 +496,36 @@ mod common {
         )
     }
 
+    fn blob_not_found(outcome: &crate::jmap::request::SetOutcome, cid: &str) -> bool {
+        outcome.not_created.iter().any(|(c, err)| {
+            c == cid && err.get("type").and_then(Value::as_str) == Some("blobNotFound")
+        })
+    }
+
+    pub fn retry_if_blob_missing<F>(
+        net: &Net,
+        ty: ObjectType,
+        cid: &str,
+        uploader: &mut Uploader<'_>,
+        touched: Vec<i64>,
+        outcome: crate::jmap::request::SetOutcome,
+        mut rebuild: F,
+    ) -> Result<crate::jmap::request::SetOutcome, Error>
+    where
+        F: FnMut(&mut Uploader<'_>) -> Result<Value, Error>,
+    {
+        if !blob_not_found(&outcome, cid) {
+            return Ok(outcome);
+        }
+        for id in &touched {
+            uploader.invalidate(*id);
+        }
+        let _ = uploader.take_touched();
+        let wire = rebuild(uploader)?;
+        let _ = uploader.take_touched();
+        create_batch(net, ty, vec![(cid.to_owned(), wire)]).map_err(Error::from)
+    }
+
     fn synthesize_dry_run_outcome(
         ty: ObjectType,
         creates: &[(String, Value)],

src/sync/export/email.rs

@@ -15,7 +15,7 @@ use crate::jmap::error::JmapError;
 use crate::jmap::request::{Request, check_method_error, get_objects};
 use crate::jmap::wire::JmapId;
 use crate::logging::Logger;
-use crate::sync::import_jmap::mapping::{EMAIL_SELECT, TargetResolver, row_to_email};
+use crate::sync::import_jmap::mapping::{EMAIL_SELECT, EmailRow, TargetResolver, row_to_email};
 use crate::sync::keys::{EmailIndex, EmailKey, email_index, email_keys, index_from_json};
 use crate::sync::{Context, TypeCounts};
 use crate::types::ObjectType;
@@ -91,7 +91,7 @@ pub fn reconcile(
     }
     let target_keys: HashSet<EmailKey> = email_keys(&indices).into_iter().collect();
 
-    let local: Vec<(i64, crate::sync::import_jmap::mapping::EmailRow)> = {
+    let local: Vec<(i64, EmailRow)> = {
         let mut stmt = ctx
             .conn
             .prepare(EMAIL_SELECT)
@@ -120,134 +120,188 @@ pub fn reconcile(
             continue;
         }
         let (local_id, row) = &local[i];
-        let mut mids = Map::new();
-        let mut all_resolved = true;
-        for ml in &row.mailbox_locals {
-            match maps.target(ObjectType::Mailbox, *ml) {
-                Some(t) => {
-                    mids.insert(t.0, Value::Bool(true));
-                }
-                None => {
-                    all_resolved = false;
-                    break;
-                }
-            }
-        }
-        if !all_resolved {
-            logger.warn(&format!(
-                "email local {local_id} skipped: mailbox not on target"
-            ));
-            counts.failed += 1;
-            continue;
-        }
-        let blob = match uploader.upload_with(row.blob_local_id, "message/rfc822") {
-            Ok(b) => b.0,
-            Err(e) => {
-                logger.warn(&format!("email blob upload failed: {e}"));
-                counts.failed += 1;
-                continue;
-            }
-        };
-        let mut kw = Map::new();
-        for k in &row.keywords {
-            kw.insert(k.clone(), Value::Bool(true));
-        }
-        let item = json!({
-            "blobId": blob,
-            "mailboxIds": Value::Object(mids),
-            "keywords": Value::Object(kw),
-            "receivedAt": row.received_at,
-        });
-        send_import_chunk(net, &[(format!("e{local_id}"), item)], counts, logger);
+        export_one(net, &mut uploader, maps, *local_id, row, counts, logger);
     }
 
     Ok(Plan::default())
 }
 
-fn send_import_chunk(
+fn build_mailbox_ids(row: &EmailRow, maps: &Maps) -> Option<Map<String, Value>> {
+    let mut mids = Map::new();
+    for ml in &row.mailbox_locals {
+        let t = maps.target(ObjectType::Mailbox, *ml)?;
+        mids.insert(t.0, Value::Bool(true));
+    }
+    Some(mids)
+}
+
+fn build_keywords(row: &EmailRow) -> Map<String, Value> {
+    let mut kw = Map::new();
+    for k in &row.keywords {
+        kw.insert(k.clone(), Value::Bool(true));
+    }
+    kw
+}
+
+fn import_item(
+    blob: String,
+    mids: Map<String, Value>,
+    kw: Map<String, Value>,
+    received_at: &str,
+) -> Value {
+    json!({
+        "blobId": blob,
+        "mailboxIds": Value::Object(mids),
+        "keywords": Value::Object(kw),
+        "receivedAt": received_at,
+    })
+}
+
+fn export_one(
     net: &Net,
-    items: &[(String, Value)],
+    uploader: &mut Uploader,
+    maps: &Maps,
+    local_id: i64,
+    row: &EmailRow,
     counts: &mut TypeCounts,
     logger: &Logger,
 ) {
-    if items.is_empty() {
-        return;
-    }
+    let cid = format!("e{local_id}");
+    let mids = match build_mailbox_ids(row, maps) {
+        Some(m) => m,
+        None => {
+            logger.warn(&format!(
+                "email local {local_id} skipped: mailbox not on target"
+            ));
+            counts.failed += 1;
+            return;
+        }
+    };
+    let blob = match uploader.upload_with(row.blob_local_id, "message/rfc822") {
+        Ok(b) => b.0,
+        Err(e) => {
+            logger.warn(&format!("email blob upload failed: {e}"));
+            counts.failed += 1;
+            return;
+        }
+    };
     if net.dry_run {
-        counts.created += items.len() as u64;
+        counts.created += 1;
         return;
     }
-    let mut map = Map::new();
-    for (k, v) in items {
-        map.insert(k.clone(), v.clone());
+    let item = import_item(blob, mids, build_keywords(row), &row.received_at);
+    match send_single_import(net, &cid, item) {
+        Ok(SingleImport::Created) => counts.created += 1,
+        Ok(SingleImport::Skipped) => counts.skipped += 1,
+        Ok(SingleImport::NotCreated { error_type, .. }) if error_type == "blobNotFound" => {
+            retry_after_reupload(net, uploader, maps, &cid, row, counts, logger);
+        }
+        Ok(SingleImport::NotCreated { detail, .. }) => {
+            logger.warn(&format!("Email/import {cid} failed: {detail}"));
+            counts.failed += 1;
+        }
+        Err(e) => {
+            logger.warn(&format!("Email/import {cid} send failed: {e}"));
+            counts.failed += 1;
+        }
     }
+}
+
+fn retry_after_reupload(
+    net: &Net,
+    uploader: &mut Uploader,
+    maps: &Maps,
+    cid: &str,
+    row: &EmailRow,
+    counts: &mut TypeCounts,
+    logger: &Logger,
+) {
+    uploader.invalidate(row.blob_local_id);
+    let blob = match uploader.upload_with(row.blob_local_id, "message/rfc822") {
+        Ok(b) => b.0,
+        Err(e) => {
+            logger.warn(&format!("Email/import {cid}: blob re-upload failed: {e}"));
+            counts.failed += 1;
+            return;
+        }
+    };
+    let mids = match build_mailbox_ids(row, maps) {
+        Some(m) => m,
+        None => {
+            logger.warn(&format!(
+                "Email/import {cid} skipped: mailbox not on target"
+            ));
+            counts.failed += 1;
+            return;
+        }
+    };
+    let item = import_item(blob, mids, build_keywords(row), &row.received_at);
+    match send_single_import(net, cid, item) {
+        Ok(SingleImport::Created) => counts.created += 1,
+        Ok(SingleImport::Skipped) => counts.skipped += 1,
+        Ok(SingleImport::NotCreated { detail, .. }) => {
+            logger.warn(&format!(
+                "Email/import {cid} failed after blob re-upload: {detail}"
+            ));
+            counts.failed += 1;
+        }
+        Err(e) => {
+            logger.warn(&format!(
+                "Email/import {cid} send failed after blob re-upload: {e}"
+            ));
+            counts.failed += 1;
+        }
+    }
+}
+
+enum SingleImport {
+    Created,
+    Skipped,
+    NotCreated { error_type: String, detail: String },
+}
+
+fn send_single_import(net: &Net, cid: &str, item: Value) -> Result<SingleImport, JmapError> {
+    let mut emails = Map::new();
+    emails.insert(cid.to_owned(), item);
     let mut req = Request::new();
     req.call(
         "Email/import",
-        json!({ "accountId": net.account, "emails": Value::Object(map) }),
+        json!({ "accountId": net.account, "emails": Value::Object(emails) }),
         "i",
     );
-    if req.fits(&net.limits).is_err() {
-        resplit_or_fail(net, items, counts, logger);
-        return;
-    }
-    match req.send(&net.client, &net.api) {
-        Ok(resp) => match resp.first().and_then(|mr| {
-            check_method_error(mr)?;
-            Ok(mr)
-        }) {
-            Ok(mr) => absorb_import(mr, counts, logger),
-            Err(JmapError::RequestTooLarge) => resplit_or_fail(net, items, counts, logger),
-            Err(JmapError::Method { error_type, .. }) if error_type == "requestTooLarge" => {
-                resplit_or_fail(net, items, counts, logger);
-            }
-            Err(e) => {
-                logger.warn(&format!(
-                    "Email/import method error ({} items): {e}",
-                    items.len()
-                ));
-                counts.failed += items.len() as u64;
-            }
-        },
-        Err(JmapError::RequestTooLarge) => resplit_or_fail(net, items, counts, logger),
-        Err(e) => {
-            logger.warn(&format!(
-                "Email/import send failed ({} items): {e}",
-                items.len()
-            ));
-            counts.failed += items.len() as u64;
-        }
-    }
-}
-
-fn resplit_or_fail(net: &Net, items: &[(String, Value)], counts: &mut TypeCounts, logger: &Logger) {
-    if items.len() <= 1 {
-        for (cid, _) in items {
-            logger.warn(&format!(
-                "Email/import {cid} exceeds maxSizeRequest alone; skipped"
-            ));
-        }
-        counts.failed += items.len() as u64;
-        return;
-    }
-    let mid = items.len() / 2;
-    send_import_chunk(net, &items[..mid], counts, logger);
-    send_import_chunk(net, &items[mid..], counts, logger);
-}
-
-fn absorb_import(mr: &crate::jmap::request::MethodCall, counts: &mut TypeCounts, logger: &Logger) {
-    if let Some(created) = mr.args.get("created").and_then(Value::as_object) {
-        counts.created += created.len() as u64;
-    }
-    if let Some(nc) = mr.args.get("notCreated").and_then(Value::as_object) {
-        for (cid, err) in nc {
-            let etype = err.get("type").and_then(Value::as_str).unwrap_or("");
-            if etype == "alreadyExists" {
-                counts.skipped += 1;
-            } else {
-                logger.warn(&format!("Email/import {cid} failed: {err}"));
-                counts.failed += 1;
-            }
+    req.fits(&net.limits)?;
+    let resp = req.send(&net.client, &net.api)?;
+    let mr = resp.first()?;
+    check_method_error(mr)?;
+    if let Some(err) = mr
+        .args
+        .get("notCreated")
+        .and_then(Value::as_object)
+        .and_then(|nc| nc.get(cid))
+    {
+        let error_type = err
+            .get("type")
+            .and_then(Value::as_str)
+            .unwrap_or("")
+            .to_owned();
+        if error_type == "alreadyExists" {
+            return Ok(SingleImport::Skipped);
         }
+        return Ok(SingleImport::NotCreated {
+            error_type,
+            detail: err.to_string(),
+        });
     }
+    if mr
+        .args
+        .get("created")
+        .and_then(Value::as_object)
+        .is_some_and(|c| !c.is_empty())
+    {
+        return Ok(SingleImport::Created);
+    }
+    Ok(SingleImport::NotCreated {
+        error_type: String::new(),
+        detail: format!("Email/import returned neither created nor notCreated for {cid}"),
+    })
 }

src/sync/export/sieve.rs

@@ -8,7 +8,7 @@ use std::collections::{HashMap, HashSet};
 
 use serde_json::{Value, json};
 
-use super::common::{create_batch, jid, target_get_all};
+use super::common::{create_batch, jid, retry_if_blob_missing, target_get_all};
 use super::{Maps, Net, Plan, Uploader};
 use crate::error::Error;
 use crate::jmap::request::Request;
@@ -64,16 +64,24 @@ pub fn reconcile(
             counts.skipped += 1;
             id
         } else {
-            let blob_id = uploader
-                .upload_with(*blob_local, "application/sieve")
-                .map_err(Error::from)?;
-            let mut obj = serde_json::Map::new();
-            if let Some(n) = name {
-                obj.insert("name".to_owned(), Value::String(n.clone()));
-            }
-            obj.insert("blobId".to_owned(), Value::String(blob_id.0));
-            let outcome = create_batch(net, ty, vec![(format!("c{local}"), Value::Object(obj))])
-                .map_err(Error::from)?;
+            let cid = format!("c{local}");
+            let build = |up: &mut Uploader<'_>| -> Result<Value, Error> {
+                let blob_id = up
+                    .upload_with(*blob_local, "application/sieve")
+                    .map_err(Error::from)?;
+                let mut obj = serde_json::Map::new();
+                if let Some(n) = name {
+                    obj.insert("name".to_owned(), Value::String(n.clone()));
+                }
+                obj.insert("blobId".to_owned(), Value::String(blob_id.0));
+                Ok(Value::Object(obj))
+            };
+            let _ = uploader.take_touched();
+            let wire = build(&mut uploader)?;
+            let touched = uploader.take_touched();
+            let outcome = create_batch(net, ty, vec![(cid.clone(), wire)]).map_err(Error::from)?;
+            let outcome =
+                retry_if_blob_missing(net, ty, &cid, &mut uploader, touched, outcome, build)?;
             match outcome.created.first().and_then(|(_, v)| jid(v)) {
                 Some(id) => {
                     counts.created += 1;

src/sync/export/tree.rs

@@ -9,7 +9,7 @@ use std::collections::{HashMap, HashSet};
 use rusqlite::params;
 use serde_json::Value;
 
-use super::common::{create_batch, jid, target_query_get};
+use super::common::{create_batch, jid, retry_if_blob_missing, target_query_get};
 use super::{Net, Plan, Uploader};
 use crate::error::Error;
 use crate::jmap::wire::JmapId;
@@ -182,6 +182,8 @@ pub fn reconcile(
                     counts.failed += 1;
                     continue;
                 }
+                let cid = format!("c{}", n.local);
+                let _ = uploader.take_touched();
                 let obj = match build_create(ctx, ty, n.local, maps, &mut uploader) {
                     Ok(o) => o,
                     Err(e) => {
@@ -194,8 +196,29 @@ pub fn reconcile(
                         continue;
                     }
                 };
-                let outcome = create_batch(net, ty, vec![(format!("c{}", n.local), obj)])
-                    .map_err(Error::from)?;
+                let touched = uploader.take_touched();
+                let outcome =
+                    create_batch(net, ty, vec![(cid.clone(), obj)]).map_err(Error::from)?;
+                let outcome = match retry_if_blob_missing(
+                    net,
+                    ty,
+                    &cid,
+                    &mut uploader,
+                    touched,
+                    outcome,
+                    |up| build_create(ctx, ty, n.local, maps, up),
+                ) {
+                    Ok(o) => o,
+                    Err(e) => {
+                        logger.warn(&format!(
+                            "{} local {} skipped: {e}",
+                            ty.jmap_name(),
+                            n.local
+                        ));
+                        counts.failed += 1;
+                        continue;
+                    }
+                };
                 for (cid, v) in &outcome.created {
                     if let Some(local) = cid.strip_prefix('c').and_then(|s| s.parse::<i64>().ok())
                         && let Some(id) = jid(v)

src/sync/export/uidtype.rs

@@ -8,7 +8,7 @@ use std::collections::HashSet;
 
 use serde_json::Value;
 
-use super::common::{create_batch, jid, target_query_get};
+use super::common::{create_batch, jid, retry_if_blob_missing, target_query_get};
 use super::{Maps, Net, Plan, Uploader};
 use crate::error::Error;
 use crate::logging::Logger;
@@ -74,6 +74,8 @@ pub fn reconcile(
             counts.skipped += 1;
             continue;
         }
+        let cid = format!("c{local}");
+        let _ = uploader.take_touched();
         let wire = match build_wire(ctx, ty, *local, maps, &mut uploader) {
             Ok(w) => w,
             Err(e) => {
@@ -82,8 +84,19 @@ pub fn reconcile(
                 continue;
             }
         };
+        let touched = uploader.take_touched();
+        let outcome = create_batch(net, ty, vec![(cid.clone(), wire)]).map_err(Error::from)?;
         let outcome =
-            create_batch(net, ty, vec![(format!("c{local}"), wire)]).map_err(Error::from)?;
+            match retry_if_blob_missing(net, ty, &cid, &mut uploader, touched, outcome, |up| {
+                build_wire(ctx, ty, *local, maps, up)
+            }) {
+                Ok(o) => o,
+                Err(e) => {
+                    logger.warn(&format!("{} local {local} skipped: {e}", ty.jmap_name()));
+                    counts.failed += 1;
+                    continue;
+                }
+            };
         for (cid, v) in &outcome.created {
             if let Some(parsed) = cid.strip_prefix('c').and_then(|s| s.parse::<i64>().ok())
                 && let Some(id) = jid(v)

tests/mock_sync.rs

@@ -317,6 +317,177 @@ fn email_export_sends_one_email_per_import_call() {
     let _ = std::fs::remove_file(&archive);
 }
 
+#[test]
+fn export_email_blob_not_found_reuploads_and_retries() {
+    let mut server = mockito::Server::new();
+    let base = server.url();
+    let api = "/jmap/api";
+
+    let archive = tmp();
+    {
+        let conn = db::init::open(&archive).unwrap();
+        conn.execute(
+            "INSERT INTO mailboxes (id,name,parent_id,role) VALUES (1,'Inbox',NULL,'inbox')",
+            [],
+        )
+        .unwrap();
+        let raw = b"From: a@x\r\nSubject: dup\r\nMessage-ID: <dup-1@h>\r\n\r\nbody";
+        let blob = db::blobs::intern_blob(&conn, raw).unwrap();
+        for _ in 0..2 {
+            conn.execute(
+                "INSERT INTO emails (blob_id,received_at,mailbox_ids,keywords)
+                 VALUES (?1,'2020-01-01T00:00:00Z','[1]','[]')",
+                rusqlite::params![blob],
+            )
+            .unwrap();
+        }
+    }
+
+    let _root = server.mock("GET", "/").with_status(404).create();
+    let _wk = server
+        .mock("GET", "/.well-known/jmap")
+        .with_body(session_body(&base))
+        .create();
+
+    let _mq1 = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("Mailbox/query".into()))
+        .with_body(
+            json!({"methodResponses":[["Mailbox/query",
+            {"accountId":"w","ids":["t1"]},"q"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let _mq2 = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("Mailbox/query".into()))
+        .with_body(
+            json!({"methodResponses":[["Mailbox/query",
+            {"accountId":"w","ids":[]},"q"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let _mg = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("Mailbox/get".into()))
+        .with_body(
+            json!({"methodResponses":[["Mailbox/get",{"accountId":"w","list":[
+            {"id":"t1","name":"Inbox","role":"inbox","parentId":null,
+             "myRights":{"mayDelete":true}}],"notFound":[]},"g"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let _eq = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("Email/query".into()))
+        .with_body(
+            json!({"methodResponses":[["Email/query",
+            {"accountId":"w","ids":[]},"q"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+
+    let up1 = server
+        .mock("POST", Matcher::Regex("/jmap/upload/".into()))
+        .with_body(json!({"blobId":"UP1"}).to_string())
+        .expect(1)
+        .create();
+    let up2 = server
+        .mock("POST", Matcher::Regex("/jmap/upload/".into()))
+        .with_body(json!({"blobId":"UP2"}).to_string())
+        .expect(1)
+        .create();
+
+    let imp_e1 = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("Email/import".into()),
+            Matcher::Regex("e1".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["Email/import",{"accountId":"w",
+                "created":{"e1":{"id":"x1","blobId":"UP1","threadId":"t","size":10}}},"i"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let imp_e2_stale = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("Email/import".into()),
+            Matcher::Regex("e2".into()),
+            Matcher::Regex("UP1".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["Email/import",{"accountId":"w",
+                "notCreated":{"e2":{"type":"blobNotFound"}}},"i"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let imp_e2_fresh = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("Email/import".into()),
+            Matcher::Regex("e2".into()),
+            Matcher::Regex("UP2".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["Email/import",{"accountId":"w",
+                "created":{"e2":{"id":"x2","blobId":"UP2","threadId":"t","size":10}}},"i"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+
+    let summary = sync::export::run(
+        CommonConfig {
+            archive: archive.clone(),
+            threads: 1,
+            dry_run: false,
+            max_retries: 1,
+            allow_invalid_certs: false,
+            logger: Logger::from_flags(true, 0),
+        },
+        ExportConfig {
+            connect: ConnectConfig {
+                url: base.clone(),
+                auth: Auth::Basic {
+                    user: "u".into(),
+                    password: "p".into(),
+                },
+                account: AccountSelector::Id("w".into()),
+            },
+            objects: None,
+            prune: false,
+            yes: true,
+        },
+    )
+    .expect("export run");
+
+    let email = summary
+        .per_type
+        .iter()
+        .find(|(t, _)| *t == "Email")
+        .map(|(_, c)| c.clone())
+        .expect("email counts");
+    assert_eq!(email.created, 2, "both emails end up created");
+    assert_eq!(email.failed, 0, "blobNotFound self-heals, not a failure");
+    assert_eq!(email.skipped, 0);
+    assert!(!summary.any_failed());
+
+    up1.assert();
+    up2.assert();
+    imp_e1.assert();
+    imp_e2_stale.assert();
+    imp_e2_fresh.assert();
+    let _ = std::fs::remove_file(&archive);
+}
+
 fn session_body_full(base: &str) -> String {
     json!({
         "apiUrl": format!("{base}/jmap/api"),
@@ -1485,6 +1656,131 @@ fn export_sieve_scripts_identical_content_different_names_both_created() {
     let _ = std::fs::remove_file(&archive);
 }
 
+#[test]
+fn export_sieve_blob_not_found_on_dedup_reuse_reuploads_and_retries() {
+    let mut server = mockito::Server::new();
+    let base = server.url();
+    let api = "/jmap/api";
+    let archive = tmp();
+    let shared = b"require [\"fileinto\"];\nfileinto \"Archive\";\n";
+    {
+        let conn = db::init::open(&archive).unwrap();
+        let blob = db::blobs::intern_blob(&conn, shared).unwrap();
+        conn.execute(
+            "INSERT INTO sieve_scripts (id,name,is_active,blob_id) VALUES (1,'dup-A',0,?1)",
+            rusqlite::params![blob],
+        )
+        .unwrap();
+        conn.execute(
+            "INSERT INTO sieve_scripts (id,name,is_active,blob_id) VALUES (2,'dup-B',0,?1)",
+            rusqlite::params![blob],
+        )
+        .unwrap();
+    }
+
+    let _root = server.mock("GET", "/").with_status(404).create();
+    let _wk = server
+        .mock("GET", "/.well-known/jmap")
+        .with_body(session_body_full(&base))
+        .expect_at_least(1)
+        .create();
+    let _g = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("SieveScript/get".into()))
+        .with_body(
+            json!({"methodResponses":[["SieveScript/get",
+                {"accountId":"w","list":[],"notFound":[]},"g"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let up1 = server
+        .mock("POST", Matcher::Regex("/jmap/upload/".into()))
+        .with_body(json!({"blobId":"UP1"}).to_string())
+        .expect(1)
+        .create();
+    let up2 = server
+        .mock("POST", Matcher::Regex("/jmap/upload/".into()))
+        .with_body(json!({"blobId":"UP2"}).to_string())
+        .expect(1)
+        .create();
+    let create_a = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("SieveScript/set".into()),
+            Matcher::Regex("dup-A".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["SieveScript/set",{"accountId":"w",
+                "created":{"c1":{"id":"S1"}}},"s"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let create_b_stale = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("SieveScript/set".into()),
+            Matcher::Regex("dup-B".into()),
+            Matcher::Regex("UP1".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["SieveScript/set",{"accountId":"w",
+                "notCreated":{"c2":{"type":"blobNotFound"}}},"s"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let create_b_fresh = server
+        .mock("POST", api)
+        .match_body(Matcher::AllOf(vec![
+            Matcher::Regex("SieveScript/set".into()),
+            Matcher::Regex("dup-B".into()),
+            Matcher::Regex("UP2".into()),
+        ]))
+        .with_body(
+            json!({"methodResponses":[["SieveScript/set",{"accountId":"w",
+                "created":{"c2":{"id":"S2"}}},"s"]]})
+            .to_string(),
+        )
+        .expect(1)
+        .create();
+    let _deactivate = server
+        .mock("POST", api)
+        .match_body(Matcher::Regex("onSuccessDeactivateScript".into()))
+        .with_body(
+            json!({"methodResponses":[["SieveScript/set",{"accountId":"w"},"a"]]}).to_string(),
+        )
+        .expect(1)
+        .create();
+
+    let summary = sync::export::run(
+        common(&archive),
+        export_cfg_objects(&base, vec![ObjectType::SieveScript]),
+    )
+    .expect("export");
+    up1.assert();
+    up2.assert();
+    create_a.assert();
+    create_b_stale.assert();
+    create_b_fresh.assert();
+    let counts = summary
+        .per_type
+        .iter()
+        .find(|(t, _)| *t == "SieveScript")
+        .map(|(_, c)| c.clone())
+        .expect("sieve counts");
+    assert_eq!(
+        counts.created, 2,
+        "the dedup-reused blobId that came back blobNotFound self-heals via re-upload"
+    );
+    assert_eq!(
+        counts.failed, 0,
+        "blobNotFound on a reused blob is not a failure"
+    );
+    let _ = std::fs::remove_file(&archive);
+}
+
 #[test]
 fn import_deeply_nested_mailbox_tree_orders_correctly() {
     let mut server = mockito::Server::new();