diff --git a/packages/isomorphic-core/src/env-helpers.es6 b/packages/isomorphic-core/src/env-helpers.es6
new file mode 100644
index 000000000..c63359103
--- /dev/null
+++ b/packages/isomorphic-core/src/env-helpers.es6
@@ -0,0 +1,8 @@
+
+export function isClientEnv() {
+  return typeof window !== 'undefined' && typeof window.NylasEnv !== 'undefined'
+}
+
+export function isCloudEnv() {
+  return !isClientEnv()
+}