fix(core): update

ts/mailgun.plugins.ts

@@ -1,8 +1,6 @@
 // @pushrocks scope
+import * as smartmail from '@pushrocks/smartmail';
 import * as smartrequest from '@pushrocks/smartrequest';
 import * as smartstring from '@pushrocks/smartstring';
 
-export {
-  smartrequest,
-  smartstring
-};
+export { smartmail, smartrequest, smartstring };