1 files changed, 2 insertions, 1 deletions
diff --git a/lib/render.js b/lib/render.js
index e9d4889..63eecd4 100644
--- a/lib/render.js
+++ b/lib/render.js
@@ -190,7 +190,8 @@ Render.prototype.toUrl = function (href) {
   switch (href[0]) {
     case '%':
       if (!u.isRef(href)) return false
-      return this.opts.base + encodeURIComponent(href)
+      return this.opts.base +
+        (this.opts.encode_msgids ? encodeURIComponent(href) : href)
     case '@':
       if (!u.isRef(href)) return false
       return this.opts.base + href