Add v4.1.0 migrations.

internal/migrations/v4.1.0.go

@@ -0,0 +1,21 @@
+package migrations
+
+import (
+	"log"
+
+	"github.com/jmoiron/sqlx"
+	"github.com/knadh/koanf/v2"
+	"github.com/knadh/stuffbin"
+)
+
+// V4_1_0 performs the DB migrations.
+func V4_1_0(db *sqlx.DB, fs stuffbin.FileSystem, ko *koanf.Koanf, lo *log.Logger) error {
+	// Insert new preference settings.
+	if _, err := db.Exec(`
+		INSERT INTO settings (key, value) VALUES('bounce.forwardemail', '{"enabled": false, "key": ""}') ON CONFLICT DO NOTHING;
+	`); err != nil {
+		return err
+	}
+
+	return nil
+}