From e7554b212fb9006fbacd0d49838a241fad44a1c5 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Wed, 28 Jan 2026 17:37:34 +0200
Subject: [PATCH] msgconv/attachments: don't fail if mimeless file has less
 than 512 bytes

---
 pkg/msgconv/attachments.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/msgconv/attachments.go b/pkg/msgconv/attachments.go
index 72a7ae9..035b5f1 100644
--- a/pkg/msgconv/attachments.go
+++ b/pkg/msgconv/attachments.go
@@ -123,7 +123,7 @@ func (d *MessageConverter) ReuploadMedia(
 		if mimeType == "" {
 			mimeBuf := make([]byte, 512)
 			n, err := file.(*os.File).ReadAt(mimeBuf, 0)
-			if err != nil {
+			if err != nil && !errors.Is(err, io.EOF) {
 				return nil, fmt.Errorf("couldn't read file for mime detection: %w", err)
 			}
 			mimeType = http.DetectContentType(mimeBuf[:n])