diff --git a/sendgrid/base/values.py b/sendgrid/base/values.py
new file mode 100644
index 00000000..16032b11
--- /dev/null
+++ b/sendgrid/base/values.py
@@ -0,0 +1,13 @@
+from typing import Dict
+
+unset = object()
+
+
+def of(d: Dict[str, object]) -> Dict[str, object]:
+    """
+    Remove unset values from a dict.
+
+    :param d: A dict to strip.
+    :return A dict with unset values removed.
+    """
+    return {k: v for k, v in d.items() if v != unset}
diff --git a/sendgrid/http/response.py b/sendgrid/http/response.py
index 6d86c2d5..8c947516 100644
--- a/sendgrid/http/response.py
+++ b/sendgrid/http/response.py
@@ -27,5 +27,20 @@ def text(self) -> str:
     def is_success(self):
         return self.status_code in HTTPStatus.SUCCESS
 
-    def __repr__(self) -> str:
-        return "HTTP {} {}".format(self.status_code, self.content)
\ No newline at end of file
+    def __str__(self) -> str:
+        return f"Response(status_code={self.status_code}, text={self.text}, headers={self.headers}, ok={self.ok})"
+
+
+class ApiResponse(object):
+    def __init__(
+            self,
+            status_code,
+            model,
+            headers
+    ):
+        self.status_code = status_code
+        self.model = model
+        self.headers = headers
+
+    def __str__(self) -> str:
+        return f"ApiResponse(status_code={self.status_code}, model={self.model}, headers={self.headers})"