diff --git a/noxfile.py b/noxfile.py
index a246eb65c..6158e7b05 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -3,11 +3,18 @@
 nox.options.stop_on_first_error = True
 nox.options.reuse_existing_virtualenvs = False
 
-nox.options.sessions = ['lint', 'test', 'coverage', 'docs']
+nox.options.sessions = ['lint', 'analyze', 'test', 'coverage', 'docs']
 
 source_files = ("planet", "examples", "tests", "setup.py", "noxfile.py")
 
 
+@nox.session
+def analyze(session):
+    session.install(".[lint]")
+
+    session.run("mypy", "--ignore-missing", "planet")
+
+
 @nox.session
 def coverage(session):
     session.install("-e", ".[test]")
diff --git a/planet/__init__.py b/planet/__init__.py
index 92b4815cf..a0a36d623 100644
--- a/planet/__init__.py
+++ b/planet/__init__.py
@@ -15,6 +15,13 @@
 from . import order_request, reporting
 from .__version__ import __version__  # NOQA
 from .auth import Auth
-from .clients import DataClient, OrdersClient
+from .clients import DataClient, OrdersClient  # NOQA
 
-__all__ = [Session, OrdersClient, order_request, reporting, Auth, DataClient]
+__all__ = [
+    'Auth',
+    'DataClient'
+    'OrdersClient',
+    'order_request',
+    'reporting',
+    'Session',
+]
diff --git a/planet/auth.py b/planet/auth.py
index fa538e1ae..469b71669 100644
--- a/planet/auth.py
+++ b/planet/auth.py
@@ -30,12 +30,14 @@
 BASE_URL = f'{PLANET_BASE_URL}/v0/auth'
 ENV_API_KEY = 'PL_API_KEY'
 
+AuthType = httpx.Auth
+
 
 class Auth(metaclass=abc.ABCMeta):
     '''Handle authentication information for use with Planet APIs.'''
 
     @staticmethod
-    def from_key(key: str) -> Auth:
+    def from_key(key: str) -> AuthType:
         '''Obtain authentication from api key.
 
         Parameters:
@@ -46,7 +48,7 @@ def from_key(key: str) -> Auth:
         return auth
 
     @staticmethod
-    def from_file(filename: str = None) -> Auth:
+    def from_file(filename: str = None) -> AuthType:
         '''Create authentication from secret file.
 
         The secret file is named `.planet.json` and is stored in the user
@@ -71,7 +73,7 @@ def from_file(filename: str = None) -> Auth:
         return auth
 
     @staticmethod
-    def from_env(variable_name: str = None) -> Auth:
+    def from_env(variable_name: str = None) -> AuthType:
         '''Create authentication from environment variable.
 
         Reads the `PL_API_KEY` environment variable
@@ -80,7 +82,7 @@ def from_env(variable_name: str = None) -> Auth:
             variable_name: Alternate environment variable.
         '''
         variable_name = variable_name or ENV_API_KEY
-        api_key = os.getenv(variable_name)
+        api_key = os.getenv(variable_name, '')
         try:
             auth = APIKeyAuth(api_key)
             LOGGER.debug(f'Auth set from environment variable {variable_name}')
@@ -91,7 +93,9 @@ def from_env(variable_name: str = None) -> Auth:
         return auth
 
     @staticmethod
-    def from_login(email: str, password: str, base_url: str = None) -> Auth:
+    def from_login(email: str,
+                   password: str,
+                   base_url: str = None) -> AuthType:
         '''Create authentication from login email and password.
 
         Note: To keep your password secure, the use of `getpass` is
@@ -113,7 +117,7 @@ def from_login(email: str, password: str, base_url: str = None) -> Auth:
 
     @classmethod
     @abc.abstractmethod
-    def from_dict(cls, data: dict) -> Auth:
+    def from_dict(cls, data: dict) -> AuthType:
         pass
 
     @property
@@ -121,6 +125,10 @@ def from_dict(cls, data: dict) -> Auth:
     def value(self):
         pass
 
+    @abc.abstractmethod
+    def to_dict(self) -> dict:
+        pass
+
     def write(self, filename: str = None):
         '''Write authentication information.
 
diff --git a/planet/clients/__init__.py b/planet/clients/__init__.py
index fdbf6eacb..fbc62a1e9 100644
--- a/planet/clients/__init__.py
+++ b/planet/clients/__init__.py
@@ -15,6 +15,6 @@
 from .orders import OrdersClient
 
 __all__ = [
-    DataClient,
-    OrdersClient,
+    'DataClient',
+    'OrdersClient',
 ]
diff --git a/planet/clients/data.py b/planet/clients/data.py
index 24b5a558d..d05233451 100644
--- a/planet/clients/data.py
+++ b/planet/clients/data.py
@@ -176,10 +176,11 @@ async def create_search(self,
 
         # TODO: validate item_types
         request_json = {
-            'name': name, 'filter': search_filter, 'item_types': item_types
+            'name': name,
+            'filter': search_filter,
+            'item_types': item_types,
+            '__daily_email_enabled': enable_email
         }
-        if enable_email:
-            request_json['__daily_email_enabled'] = True
 
         request = self._request(url, method='POST', json=request_json)
         response = await self._do_request(request)
diff --git a/planet/http.py b/planet/http.py
index d69e15df3..319951f9c 100644
--- a/planet/http.py
+++ b/planet/http.py
@@ -19,7 +19,7 @@
 
 import httpx
 
-from .auth import Auth
+from .auth import Auth, AuthType
 from . import exceptions, models
 from .__version__ import __version__
 
@@ -112,7 +112,7 @@ class Session(BaseSession):
     ```
     '''
 
-    def __init__(self, auth: Auth = None):
+    def __init__(self, auth: AuthType = None):
         """Initialize a Session.
 
         Parameters:
diff --git a/planet/order_request.py b/planet/order_request.py
index bf86baa12..10a88faac 100644
--- a/planet/order_request.py
+++ b/planet/order_request.py
@@ -14,7 +14,7 @@
 """Functionality for preparing order details for use in creating an order"""
 from __future__ import annotations  # https://stackoverflow.com/a/33533514
 import logging
-from typing import List
+from typing import Any, Dict, List
 
 from . import geojson, specs
 
@@ -67,7 +67,7 @@ def build_request(name: str,
         planet.specs.SpecificationException: If order_type is not a valid
             order type.
     '''
-    details = {'name': name, 'products': products}
+    details: Dict[str, Any] = {'name': name, 'products': products}
 
     if subscription_id:
         details['subscription_id'] = subscription_id
@@ -79,8 +79,8 @@ def build_request(name: str,
         details['notifications'] = notifications
 
     if order_type:
-        order_type = specs.validate_order_type(order_type)
-        details['order_type'] = order_type
+        validated_order_type = specs.validate_order_type(order_type)
+        details['order_type'] = validated_order_type
 
     if tools:
         details['tools'] = tools
@@ -108,18 +108,19 @@ def product(item_ids: List[str],
             are not valid bundles or if item_type is not valid for the given
             bundle or fallback bundle.
     '''
-    product_bundle = specs.validate_bundle(product_bundle)
-    item_type = specs.validate_item_type(item_type, product_bundle)
+    validated_product_bundle = specs.validate_bundle(product_bundle)
+    item_type = specs.validate_item_type(item_type, validated_product_bundle)
 
     if fallback_bundle is not None:
-        fallback_bundle = specs.validate_bundle(fallback_bundle)
-        specs.validate_item_type(item_type, fallback_bundle)
-        product_bundle = ','.join([product_bundle, fallback_bundle])
+        validated_fallback_bundle = specs.validate_bundle(fallback_bundle)
+        specs.validate_item_type(item_type, validated_fallback_bundle)
+        validated_product_bundle = ','.join(
+            [validated_product_bundle, validated_fallback_bundle])
 
     product_dict = {
         'item_ids': item_ids,
         'item_type': item_type,
-        'product_bundle': product_bundle
+        'product_bundle': validated_product_bundle
     }
     return product_dict
 
diff --git a/planet/reporting.py b/planet/reporting.py
index 53423a3f9..e46e54dbd 100644
--- a/planet/reporting.py
+++ b/planet/reporting.py
@@ -90,15 +90,19 @@ def update_state(self, state: str):
     def update(self, state: str = None, order_id: str = None):
         if state:
             self.state = state
-            try:
-                self.bar.postfix[1] = self.state
-            except AttributeError:
-                # If the bar is disabled, attempting to access self.bar.postfix
-                # will result in an error. In this case, just skip it.
-                pass
+            if self.bar is not None:
+                try:
+                    self.bar.postfix[1] = self.state
+                except AttributeError:
+                    # If the bar is disabled, attempting to access
+                    # self.bar.postfix will result in an error. In this
+                    # case, just skip it.
+                    pass
 
         if order_id:
             self.order_id = order_id
-            self.bar.set_description_str(self.desc, refresh=False)
+            if self.bar is not None:
+                self.bar.set_description_str(self.desc, refresh=False)
 
-        self.bar.refresh()
+        if self.bar is not None:
+            self.bar.refresh()
diff --git a/setup.py b/setup.py
index bcb9df61c..5996dddb5 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@
     'pytest', 'pytest-asyncio==0.16', 'pytest-cov', 'respx==0.16.3'
 ]
 
-lint_requires = ['flake8', 'yapf']
+lint_requires = ['flake8', 'mypy', 'yapf']
 
 doc_requires = [
     'mkdocs==1.3',
diff --git a/tests/integration/test_data_api.py b/tests/integration/test_data_api.py
index 3361e29d8..7fccb1a6f 100644
--- a/tests/integration/test_data_api.py
+++ b/tests/integration/test_data_api.py
@@ -174,7 +174,10 @@ async def test_create_search_basic(search_filter, session):
 
     # check that request is correct
     expected_request = {
-        "item_types": ["PSScene"], "filter": search_filter, "name": "test"
+        "item_types": ["PSScene"],
+        "filter": search_filter,
+        "name": "test",
+        "__daily_email_enabled": False
     }
     actual_body = json.loads(respx.calls[0].request.content)
     assert actual_body == expected_request