remove request after render because its not pickleable

templated_mail/mail.py

@@ -26,6 +26,8 @@ def __init__(self, request=None, context=None, template_name=None,
         if template_name is not None:
             self.template_name = template_name
 
+        self.render()
+
     def get_context_data(self, **kwargs):
         ctx = super(BaseEmailMessage, self).get_context_data(**kwargs)
         context = dict(ctx, **self.context)
@@ -66,17 +68,21 @@ def render(self):
                 self._process_block(block_node, context)
         self._attach_body()
 
-    def send(self, to, *args, **kwargs):
-        self.render()
+    def send(self, *args, **kwargs):
+        if len(args) > 0:
+            self.to = args[0]
+        elif "to" in kwargs:
+            self.to = kwargs.pop('to')
 
-        self.to = to
         self.cc = kwargs.pop('cc', [])
         self.bcc = kwargs.pop('bcc', [])
         self.reply_to = kwargs.pop('reply_to', [])
         self.from_email = kwargs.pop(
             'from_email', settings.DEFAULT_FROM_EMAIL
         )
 
+        if hasattr(self, "request"):
+            del self.request
         super(BaseEmailMessage, self).send(*args, **kwargs)
 
     def _process_block(self, block_node, context):

tox.ini

@@ -3,34 +3,23 @@ python_paths = .
 
 [tox]
 envlist =
-    py{27,34,35,36,37}-django111
-    py{34,35,36,37}-django20
-    py{35,36,37}-django{21,master}
+    py{38}-django{31,32}
     flake8
 
 
 [travis:env]
 DJANGO =
-    1.11: django111
-    2.0: django20
-    2.1: django21
-    master: djangomaster
+    3.1: django31
+    3.2: django32
 
 
 [testenv]
 passenv = CI TRAVIS TRAVIS_*
 basepython =
-    py27: python2.7
-    py34: python3.4
-    py35: python3.5
-    py36: python3.6
-    py37: python3.7
+    py38: python3.8
 deps =
-    django111: django>=1.11,<2.0
-    django20: django>=2.0,<2.1
-    django21: django>=2.1,<2.2
-    djangomaster: git+git://github.com/django/django.git
-    py27: mock
+    django31: django>=3.1,<3.2
+    django32: django>=3.2,<3.3
     -rrequirements/test
 commands =
     py.test --ds=tests.settings --capture=no --cov-report term-missing --cov-report html --cov=templated_mail tests
@@ -40,4 +29,4 @@ commands =
 basepython = python3
 skip_install = true
 deps = flake8
-commands = flake8 .
+commands = flake8 .