feat: send sync messages over SMTP and do not move them to mvbox

python/tests/test_1_online.py

@@ -268,22 +268,23 @@ def test_enable_mvbox_move(acfactory, lp):
     assert ac2._evtracker.wait_next_incoming_message().text == "message1"
 
 
-def test_move_sync_msgs(acfactory):
+def test_dont_move_sync_msgs(acfactory):
     ac1 = acfactory.new_online_configuring_account(bcc_self=True, sync_msgs=True, fix_is_chatmail=True)
     acfactory.bring_accounts_online()
 
-    ac1.direct_imap.select_folder("DeltaChat")
+    ac1.direct_imap.select_folder("Inbox")
     # Sync messages may also be sent during the configuration.
-    mvbox_msg_cnt = len(ac1.direct_imap.get_all_messages())
+    inbox_msg_cnt = len(ac1.direct_imap.get_all_messages())
 
     ac1.set_config("displayname", "Alice")
     ac1._evtracker.get_matching("DC_EVENT_MSG_DELIVERED")
     ac1.set_config("displayname", "Bob")
     ac1._evtracker.get_matching("DC_EVENT_MSG_DELIVERED")
     ac1.direct_imap.select_folder("Inbox")
-    assert len(ac1.direct_imap.get_all_messages()) == 0
+    assert len(ac1.direct_imap.get_all_messages()) == inbox_msg_cnt + 2
+
     ac1.direct_imap.select_folder("DeltaChat")
-    assert len(ac1.direct_imap.get_all_messages()) == mvbox_msg_cnt + 2
+    assert len(ac1.direct_imap.get_all_messages()) == 0
 
 
 def test_forward_messages(acfactory, lp):

src/chat.rs

@@ -662,7 +662,7 @@ impl ChatId {
         context
             .set_config_internal(Config::LastHousekeeping, None)
             .await?;
-        context.scheduler.interrupt_inbox().await;
+        context.scheduler.interrupt_smtp().await;
 
         Ok(())
     }
@@ -2115,7 +2115,7 @@ pub(crate) async fn sync(context: &Context, id: SyncId, action: SyncAction) -> R
     context
         .add_sync_item(SyncData::AlterChat { id, action })
         .await?;
-    context.scheduler.interrupt_inbox().await;
+    context.scheduler.interrupt_smtp().await;
     Ok(())
 }
 
@@ -2736,7 +2736,7 @@ async fn prepare_send_msg(
     Ok(row_ids)
 }
 
-/// Constructs jobs for sending a message and inserts them into the appropriate table.
+/// Constructs jobs for sending a message and inserts them into the `smtp` table.
 ///
 /// Updates the message `GuaranteeE2ee` parameter and persists it
 /// in the database depending on whether the message
@@ -2860,30 +2860,27 @@ pub(crate) async fn create_send_msg_jobs(context: &Context, msg: &mut Message) -
     let chunk_size = context.get_max_smtp_rcpt_to().await?;
     let trans_fn = |t: &mut rusqlite::Transaction| {
         let mut row_ids = Vec::<i64>::new();
+
         if let Some(sync_ids) = rendered_msg.sync_ids_to_delete {
             t.execute(
                 &format!("DELETE FROM multi_device_sync WHERE id IN ({sync_ids})"),
                 (),
             )?;
-            t.execute(
-                "INSERT INTO imap_send (mime, msg_id) VALUES (?, ?)",
-                (&rendered_msg.message, msg.id),
+        }
+
+        for recipients_chunk in recipients.chunks(chunk_size) {
+            let recipients_chunk = recipients_chunk.join(" ");
+            let row_id = t.execute(
+                "INSERT INTO smtp (rfc724_mid, recipients, mime, msg_id) \
+                VALUES            (?1,         ?2,         ?3,   ?4)",
+                (
+                    &rendered_msg.rfc724_mid,
+                    recipients_chunk,
+                    &rendered_msg.message,
+                    msg.id,
+                ),
             )?;
-        } else {
-            for recipients_chunk in recipients.chunks(chunk_size) {
-                let recipients_chunk = recipients_chunk.join(" ");
-                let row_id = t.execute(
-                    "INSERT INTO smtp (rfc724_mid, recipients, mime, msg_id) \
-                    VALUES            (?1,         ?2,         ?3,   ?4)",
-                    (
-                        &rendered_msg.rfc724_mid,
-                        recipients_chunk,
-                        &rendered_msg.message,
-                        msg.id,
-                    ),
-                )?;
-                row_ids.push(row_id.try_into()?);
-            }
+            row_ids.push(row_id.try_into()?);
         }
         Ok(row_ids)
     };
@@ -3845,7 +3842,7 @@ pub(crate) async fn add_contact_to_chat_ex(
                 .log_err(context)
                 .is_ok()
         {
-            context.scheduler.interrupt_inbox().await;
+            context.scheduler.interrupt_smtp().await;
         }
     }
     context.emit_event(EventType::ChatModified(chat_id));
@@ -4319,7 +4316,7 @@ pub async fn save_msgs(context: &Context, msg_ids: &[MsgId]) -> Result<()> {
             })
             .await?;
     }
-    context.scheduler.interrupt_inbox().await;
+    context.scheduler.interrupt_smtp().await;
     Ok(())
 }
 

src/config.rs

@@ -605,12 +605,6 @@ impl Context {
             && !self.get_config_bool(Config::Bot).await?)
     }
 
-    /// Returns whether sync messages should be uploaded to the mvbox.
-    pub(crate) async fn should_move_sync_msgs(&self) -> Result<bool> {
-        Ok(self.get_config_bool(Config::MvboxMove).await?
-            || !self.get_config_bool(Config::IsChatmail).await?)
-    }
-
     /// Returns whether MDNs should be requested.
     pub(crate) async fn should_request_mdns(&self) -> Result<bool> {
         match self.get_config_bool_opt(Config::MdnsEnabled).await? {
@@ -880,7 +874,7 @@ impl Context {
         {
             return Ok(());
         }
-        self.scheduler.interrupt_inbox().await;
+        self.scheduler.interrupt_smtp().await;
         Ok(())
     }
 

src/config/config_tests.rs

@@ -237,7 +237,7 @@ async fn test_no_sync_on_self_sent_msg() -> Result<()> {
     let status = "Sent via usual message";
     alice0.set_config(Config::Selfstatus, Some(status)).await?;
     alice0.send_sync_msg().await?;
-    alice0.pop_sent_sync_msg().await;
+    alice0.pop_sent_msg().await;
     let status1 = "Synced via sync message";
     alice1.set_config(Config::Selfstatus, Some(status1)).await?;
     tcm.send_recv(alice0, alice1, "hi Alice!").await;
@@ -261,7 +261,7 @@ async fn test_no_sync_on_self_sent_msg() -> Result<()> {
         .set_config(Config::Selfavatar, Some(file.to_str().unwrap()))
         .await?;
     alice0.send_sync_msg().await?;
-    alice0.pop_sent_sync_msg().await;
+    alice0.pop_sent_msg().await;
     let file = alice1.dir.path().join("avatar.jpg");
     let bytes = include_bytes!("../../test-data/image/avatar1000x1000.jpg");
     tokio::fs::write(&file, bytes).await?;

src/imap.rs

@@ -1110,52 +1110,6 @@ impl Session {
         Ok(())
     }
 
-    /// Uploads sync messages from the `imap_send` table with `\Seen` flag set.
-    pub(crate) async fn send_sync_msgs(&mut self, context: &Context, folder: &str) -> Result<()> {
-        context.send_sync_msg().await?;
-        while let Some((id, mime, msg_id, attempts)) = context
-            .sql
-            .query_row_optional(
-                "SELECT id, mime, msg_id, attempts FROM imap_send ORDER BY id LIMIT 1",
-                (),
-                |row| {
-                    let id: i64 = row.get(0)?;
-                    let mime: String = row.get(1)?;
-                    let msg_id: MsgId = row.get(2)?;
-                    let attempts: i64 = row.get(3)?;
-                    Ok((id, mime, msg_id, attempts))
-                },
-            )
-            .await
-            .context("Failed to SELECT from imap_send")?
-        {
-            let res = self
-                .append(folder, Some("(\\Seen)"), None, mime)
-                .await
-                .with_context(|| format!("IMAP APPEND to {folder} failed for {msg_id}"))
-                .log_err(context);
-            if res.is_ok() {
-                msg_id.set_delivered(context).await?;
-            }
-            const MAX_ATTEMPTS: i64 = 2;
-            if res.is_ok() || attempts >= MAX_ATTEMPTS - 1 {
-                context
-                    .sql
-                    .execute("DELETE FROM imap_send WHERE id=?", (id,))
-                    .await
-                    .context("Failed to delete from imap_send")?;
-            } else {
-                context
-                    .sql
-                    .execute("UPDATE imap_send SET attempts=attempts+1 WHERE id=?", (id,))
-                    .await
-                    .context("Failed to update imap_send.attempts")?;
-                res?;
-            }
-        }
-        Ok(())
-    }
-
     /// Stores pending `\Seen` flags for messages in `imap_markseen` table.
     pub(crate) async fn store_seen_flags_on_imap(&mut self, context: &Context) -> Result<()> {
         let rows = context
@@ -2113,17 +2067,6 @@ async fn needs_move_to_mvbox(
     headers: &[mailparse::MailHeader<'_>],
 ) -> Result<bool> {
     let has_chat_version = headers.get_header_value(HeaderDef::ChatVersion).is_some();
-    if !context.get_config_bool(Config::IsChatmail).await?
-        && has_chat_version
-        && headers
-            .get_header_value(HeaderDef::AutoSubmitted)
-            .filter(|val| val.eq_ignore_ascii_case("auto-generated"))
-            .is_some()
-        && let Some(from) = mimeparser::get_from(headers)
-        && context.is_self_addr(&from.addr).await?
-    {
-        return Ok(true);
-    }
     if !context.get_config_bool(Config::MvboxMove).await? {
         return Ok(false);
     }

src/message.rs

@@ -1717,6 +1717,7 @@ pub async fn delete_msgs_ex(
                 msgs: deleted_rfc724_mid,
             })
             .await?;
+        context.scheduler.interrupt_smtp().await;
     }
 
     for &msg_id in msg_ids {

src/qr.rs

@@ -904,7 +904,7 @@ pub async fn set_config_from_qr(context: &Context, qr: &str) -> Result<()> {
             .await?;
             token::save(context, token::Namespace::Auth, None, &authcode, timestamp).await?;
             context.sync_qr_code_tokens(None).await?;
-            context.scheduler.interrupt_inbox().await;
+            context.scheduler.interrupt_smtp().await;
         }
         Qr::ReviveVerifyGroup {
             invitenumber,
@@ -936,7 +936,7 @@ pub async fn set_config_from_qr(context: &Context, qr: &str) -> Result<()> {
             )
             .await?;
             context.sync_qr_code_tokens(Some(&grpid)).await?;
-            context.scheduler.interrupt_inbox().await;
+            context.scheduler.interrupt_smtp().await;
         }
         Qr::Login { address, options } => {
             let mut param = login_param_from_login_qr(&address, options)?;

src/scheduler.rs

@@ -572,28 +572,6 @@ async fn fetch_idle(
     };
 
     if folder_config == Config::ConfiguredInboxFolder {
-        let mvbox;
-        let syncbox = match ctx.should_move_sync_msgs().await? {
-            false => &watch_folder,
-            true => {
-                mvbox = ctx.get_config(Config::ConfiguredMvboxFolder).await?;
-                mvbox.as_deref().unwrap_or(&watch_folder)
-            }
-        };
-        if ctx
-            .get_config(Config::ConfiguredAddr)
-            .await?
-            .unwrap_or_default()
-            == connection.addr
-        {
-            session
-                .send_sync_msgs(ctx, syncbox)
-                .await
-                .context("fetch_idle: send_sync_msgs")
-                .log_err(ctx)
-                .ok();
-        }
-
         session
             .store_seen_flags_on_imap(ctx)
             .await

src/securejoin.rs

@@ -160,7 +160,7 @@ pub async fn get_securejoin_qr(context: &Context, chat: Option<ChatId>) -> Resul
             context
                 .sync_qr_code_tokens(Some(chat.grpid.as_str()))
                 .await?;
-            context.scheduler.interrupt_inbox().await;
+            context.scheduler.interrupt_smtp().await;
         }
 
         let chat_name = chat.get_name();
@@ -192,7 +192,7 @@ pub async fn get_securejoin_qr(context: &Context, chat: Option<ChatId>) -> Resul
             .replace("%20", "+");
         if sync_token {
             context.sync_qr_code_tokens(None).await?;
-            context.scheduler.interrupt_inbox().await;
+            context.scheduler.interrupt_smtp().await;
         }
         format!(
             "https://i.delta.chat/#{fingerprint}&i={invitenumber}&s={auth}&a={self_addr_urlencoded}&n={self_name_urlencoded}",

src/securejoin/securejoin_tests.rs

@@ -1019,7 +1019,7 @@ async fn test_expired_synced_auth_token() -> Result<()> {
     let qr = get_securejoin_qr(alice2, None).await?;
 
     alice2.send_sync_msg().await.unwrap();
-    let sync_msg = alice2.pop_sent_sync_msg().await;
+    let sync_msg = alice2.pop_sent_msg().await;
 
     // One week passes, QR code expires.
     SystemTime::shift(Duration::from_secs(7 * 24 * 3600));

src/smtp.rs

@@ -495,6 +495,7 @@ async fn send_mdns(context: &Context, connection: &mut Smtp) -> Result<()> {
 pub(crate) async fn send_smtp_messages(context: &Context, connection: &mut Smtp) -> Result<()> {
     let ratelimited = if context.ratelimit.read().await.can_send() {
         // add status updates and sync messages to end of sending queue
+        context.send_sync_msg().await?;
         context.flush_status_updates().await?;
         false
     } else {

src/sql/migrations.rs

@@ -1011,6 +1011,8 @@ CREATE INDEX msgs_status_updates_index2 ON msgs_status_updates (uid);
 
     inc_and_check(&mut migration_version, 119)?;
     if dbversion < migration_version {
+        // This table is deprecated sinc 2025-12-25.
+        // Sync messages are again sent over SMTP.
         sql.execute_migration(
             "CREATE TABLE imap_send (
                 id INTEGER PRIMARY KEY AUTOINCREMENT,

src/sync.rs

@@ -175,7 +175,7 @@ impl Context {
     /// Adds most recent qr-code tokens for the given group or self-contact to the list of items to
     /// be synced. If device synchronization is disabled,
     /// no tokens exist or the chat is unpromoted, the function does nothing.
-    /// The caller should call `SchedulerState::interrupt_inbox()` on its own to trigger sending.
+    /// The caller should call `SchedulerState::interrupt_smtp()` on its own to trigger sending.
     pub(crate) async fn sync_qr_code_tokens(&self, grpid: Option<&str>) -> Result<()> {
         if !self.should_send_sync_msgs().await? {
             return Ok(());
@@ -208,7 +208,7 @@ impl Context {
             grpid: None,
         }))
         .await?;
-        self.scheduler.interrupt_inbox().await;
+        self.scheduler.interrupt_smtp().await;
         Ok(())
     }
 
@@ -675,7 +675,7 @@ mod tests {
 
         // let alice's other device receive and execute the sync message,
         // also here, self-talk should stay hidden
-        let sent_msg = alice.pop_sent_sync_msg().await;
+        let sent_msg = alice.pop_sent_msg().await;
         let alice2 = TestContext::new_alice().await;
         alice2.set_config_bool(Config::SyncMsgs, true).await?;
         alice2.recv_msg_trash(&sent_msg).await;
@@ -722,7 +722,7 @@ mod tests {
                     }))
                     .await?;
                 alice1.send_sync_msg().await?.unwrap();
-                alice1.pop_sent_sync_msg().await
+                alice1.pop_sent_msg().await
             } else {
                 let chat = alice1.get_self_chat().await;
                 alice1.send_text(chat.id, "Hi").await
@@ -760,7 +760,7 @@ mod tests {
             .set_config(Config::Displayname, Some("Alice Human"))
             .await?;
         alice.send_sync_msg().await?;
-        alice.pop_sent_sync_msg().await;
+        alice.pop_sent_msg().await;
         let msg = bob.recv_msg(&alice.pop_sent_msg().await).await;
         assert_eq!(msg.text, "hi");
 
@@ -794,7 +794,7 @@ mod tests {
         // group is promoted for compatibility (because the group could be created by older Core).
         // TODO: assert!(msg_id.is_none());
         assert!(msg_id.is_some());
-        let sent = alice.pop_sent_sync_msg().await;
+        let sent = alice.pop_sent_msg().await;
         let msg = alice.parse_msg(&sent).await;
         let mut sync_items = msg.sync_items.unwrap().items;
         assert_eq!(sync_items.len(), 1);