diff --git a/config/default.json b/config/default.json
index b99b213..ce2c3ce 100644
--- a/config/default.json
+++ b/config/default.json
@@ -8,5 +8,6 @@
 		"CrossrefREST.email": "" // Pass an email to Crossref REST API to utilize the faster servers pool
 	},
 	"userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/61.0",
-	"translatorsDirectory": "./modules/translators"
+	"translatorsDirectory": "./modules/translators",
+	"persistentCookies": false // Remember upstream cookies between translation operations. Do not enable for a public service.
 }
diff --git a/src/http.js b/src/http.js
index f9fd3b4..9653bbc 100644
--- a/src/http.js
+++ b/src/http.js
@@ -91,6 +91,10 @@ Zotero.HTTP = new function() {
 			maxResponseSize: 50 * 1024 * 1024
 		}, options);
 		
+		if (config.get('persistentCookies')) {
+			options.cookieSandbox = true;
+		}
+
 		options.headers = Object.assign({
 			'User-Agent': config.get('userAgent')
 		}, options.headers);