From 2854f87a9dfdf26a8b125817e23b6f3eaeb4a546 Mon Sep 17 00:00:00 2001
From: iequidoo <dgreshilov@gmail.com>
Date: Thu, 27 Nov 2025 21:38:55 -0300
Subject: [PATCH] fix: CREATE INDEX imap_only_rfc724_mid ON imap(rfc724_mid)
 (#7490)

This effectively readds the old `imap_rfc724_mid` built only on `rfc724_mid`, otherwise
`sql::prune_tombstones()` which is called from `housekeeping()` becomes very slow because of no
suitable index.
---
 src/sql/migrations.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/sql/migrations.rs b/src/sql/migrations.rs
index 65349d224..686525680 100644
--- a/src/sql/migrations.rs
+++ b/src/sql/migrations.rs
@@ -1445,6 +1445,15 @@ CREATE INDEX imap_sync_index ON imap_sync(transport_id, folder);
         .await?;
     }
 
+    inc_and_check(&mut migration_version, 141)?;
+    if dbversion < migration_version {
+        sql.execute_migration(
+            "CREATE INDEX imap_only_rfc724_mid ON imap(rfc724_mid)",
+            migration_version,
+        )
+        .await?;
+    }
+
     let new_version = sql
         .get_raw_config_int(VERSION_CFG)
         .await?