From 8a866a60dcba1e9e008f177eca076371d06a015f Mon Sep 17 00:00:00 2001
From: Mechiel Lukkien <mechiel@ueber.net>
Date: Tue, 24 Oct 2023 13:16:00 +0200
Subject: [PATCH] when expunging a message, keep its threadid

we will need it for jmap, which needs history for threads
---
 store/account.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/store/account.go b/store/account.go
index ad50043..d2300e2 100644
--- a/store/account.go
+++ b/store/account.go
@@ -564,6 +564,7 @@ func (m *Message) PrepareExpunge() {
 		CreateSeq: m.CreateSeq,
 		ModSeq:    m.ModSeq,
 		Expunged:  true,
+		ThreadID:  m.ThreadID,
 	}
 }