fix: prevent orphaning of nested mailboxes by restricting deduplication to root-level folders

2026-03-31 15:29:09 +02:00
parent f6bec519f4
commit 1b2ee7da3a
2 changed files with 85 additions and 37 deletions
@@ -125,7 +125,16 @@ function deduplicateMailboxes(mailboxes: Mailbox[]): Mailbox[] {
      return;
    }

-    // Check if this is a duplicate of a role-based mailbox in the SAME account
+    // Never deduplicate nested mailboxes — only root-level folders can be
+    // duplicates of role-based mailboxes. Removing a nested folder that happens
+    // to share a name with a role folder (e.g. a subfolder named "Sent") would
+    // orphan its children to root level. (GitHub #118)
+    if (mb.parentId) {
+      result.push(mb);
+      return;
+    }
+
+    // Check if this root-level mailbox is a duplicate of a role-based mailbox in the SAME account
    const accountKey = mb.accountId || '';
    const accountRoles = rolesByAccount.get(accountKey) || [];
    const lowerName = mb.name.toLowerCase();