diff --git a/server/utils/htmlSanitizer.js b/server/utils/htmlSanitizer.js
index cdb3cfb0..e9473d30 100644
--- a/server/utils/htmlSanitizer.js
+++ b/server/utils/htmlSanitizer.js
@@ -10,7 +10,7 @@ function sanitize(html) {
     allowedAttributes: {
       a: ['href', 'name', 'target']
     },
-    allowedSchemes: ['https'],
+    allowedSchemes: ['http', 'https', 'mailto'],
     allowProtocolRelative: false
   }