diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..b1439fa
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,38 @@
+name: Run Tests
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    # Run automatically at 8AM PST Monday-Friday
+    - cron: '0 15 * * 1-5'
+  workflow_dispatch:
+
+jobs:
+  tests:
+    name: Run Tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    strategy:
+      matrix:
+        python-version: [ '3.6', '3.7', '3.8', '3.9' ]
+    steps:
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+      - name: Checkout mailgun_sdk-sdk
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install Dependencies
+        run: |
+          pip install virtualenv --upgrade
+          make install
+          make test-install
+
+      - name: Run the tests
+        run: make test
diff --git a/.gitignore b/.gitignore
index 84229f4..b1e1787 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,7 +24,7 @@ wheels/
 *.egg-info/
 .installed.cfg
 *.egg
-
+.idea
 # PyInstaller
 #  Usually these files are written by a python script from a template
 #  before PyInstaller builds the exe, so as to inject date/other infos into it.
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 071fa3d..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-language: python
-python:
-  - "2.7"
-  - "3.6"
-install: pip install tox-travis
-script: tox
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2043dab
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+.PHONY: install test-install
+
+
+install:
+	poetry install --no-dev
+
+test-install: install
+	poetry install
+
+analysis:
+	poetry run flake8 --ignore=E123,E126,E128,E501,W391,W291,W293,F401 tests
+	poetry run flake8 --ignore=E402,F401,W391,W291,W293 mailgun --max-line-length=300
+
+test: analysis
+	poetry run pytest
diff --git a/mailgun/__init__.py b/mailgun_sdk/__init__.py
similarity index 100%
rename from mailgun/__init__.py
rename to mailgun_sdk/__init__.py
diff --git a/mailgun/api.py b/mailgun_sdk/api.py
similarity index 93%
rename from mailgun/api.py
rename to mailgun_sdk/api.py
index 6dcdf4c..bd41af6 100644
--- a/mailgun/api.py
+++ b/mailgun_sdk/api.py
@@ -14,8 +14,9 @@ class MailgunApi(object):  # pylint: disable=too-few-public-methods
     """
 
     def __init__(self, api_key=None):
-        self.api_key = api_key
         self.session = requests.Session()
+        self.set_api_key(api_key)
+
         # APIs
         self.ips = IPs(self)
         self.mailing_list = MailingList(self)
@@ -24,7 +25,7 @@ def __init__(self, api_key=None):
 
     def set_api_key(self, api_key):
         """
-        Set the API key on the client. This is called by `mailgun.initialize()`.
+        Set the API key on the client. This is called by `mailgun_sdk.initialize()`.
 
         :param api_key:         your Mailgun API key
         """
diff --git a/mailgun/base.py b/mailgun_sdk/base.py
similarity index 86%
rename from mailgun/base.py
rename to mailgun_sdk/base.py
index d12b382..9c09170 100644
--- a/mailgun/base.py
+++ b/mailgun_sdk/base.py
@@ -15,9 +15,10 @@ class ApiResource(object):  # pylint: disable=too-few-public-methods
     api_endpoint = None
     api_url = "https://api.mailgun.net/v3"
 
-    def __init__(self, api):
+    def __init__(self, api, base_url="https://api.mailgun.net/v3"):
         assert self.api_endpoint, "Missing `api_endpoint` attribute definition."
         self.api = api
+        self.api_url = base_url
         self.base_url = self._get_base_url()
 
     def _get_base_url(self):
@@ -35,12 +36,17 @@ def request(self, method, endpoint="", **params):
         :param **params:            every additional keyword argument is
                                     forwarded to `requests`
         """
-        url = self.base_url
+        url = self._get_base_url()
         if endpoint:
             url = "{}/{}".format(url, endpoint)
 
         response = self.api.session.request(method, url, **params)
-        response.raise_for_status()
+
+        try:
+            response.raise_for_status()
+        except HTTPError as e:
+            
+            raise HTTPError("{}\n{}".format(e.strerror, e.response.text), e.response)
 
         return response.json()
 
@@ -52,9 +58,9 @@ class ApiDomainResource(ApiResource):  # pylint: disable=too-few-public-methods
 
     DOMAIN_NAMESPACE = False
 
-    def __init__(self, api, domain):
+    def __init__(self, api, domain, base_url=ApiResource.api_url):
         self.domain = domain
-        super(ApiDomainResource, self).__init__(api)
+        super(ApiDomainResource, self).__init__(api, base_url)
 
     def _get_base_url(self):
         """
diff --git a/mailgun/domain/__init__.py b/mailgun_sdk/domain/__init__.py
similarity index 100%
rename from mailgun/domain/__init__.py
rename to mailgun_sdk/domain/__init__.py
diff --git a/mailgun/domain/ips.py b/mailgun_sdk/domain/ips.py
similarity index 100%
rename from mailgun/domain/ips.py
rename to mailgun_sdk/domain/ips.py
diff --git a/mailgun/domain/logs.py b/mailgun_sdk/domain/logs.py
similarity index 100%
rename from mailgun/domain/logs.py
rename to mailgun_sdk/domain/logs.py
diff --git a/mailgun_sdk/domain/messages.py b/mailgun_sdk/domain/messages.py
new file mode 100644
index 0000000..1d5f713
--- /dev/null
+++ b/mailgun_sdk/domain/messages.py
@@ -0,0 +1,48 @@
+"""
+Messages API.
+url: https://documentation.mailgun.com/en/latest/user_manual.html#sending-via-api
+"""
+import json
+
+from mailgun_sdk.base import ApiDomainResource
+
+
+class Messages(ApiDomainResource):
+    """
+    Mailing list resource.
+    """
+
+    api_endpoint = "messages"
+    require_tls = False
+    """
+    data example
+    data={
+                "from": "Excited User <YOU@YOUR_DOMAIN_NAME>",
+                "to": ["bar@example.com"],
+                "subject": "Hello",
+                "template": "template.test",
+                "h:X-Mailgun-Variables": json.dumps(
+                      {"title": "API documentation", "body": "Sending messages with templates"}
+                )
+            },
+    """
+
+    def send_via_template(self, from_name: str, from_email: str, to: str, subject: str, template: str, variables: dict):
+        payload = {
+            "from": "{} <{}>".format(from_name, from_email),
+            "to": [to],
+            "subject": subject,
+            "template": template,
+            "h:X-Mailgun-Variables": json.dumps(variables)
+        }
+        print(self.base_url)
+
+        print(self.api_endpoint)
+
+        if self.require_tls:
+            payload['o:require-tls'] = 'True'
+
+        return self.request(
+            "POST",
+            data=payload,
+        )
diff --git a/mailgun/ips.py b/mailgun_sdk/ips.py
similarity index 100%
rename from mailgun/ips.py
rename to mailgun_sdk/ips.py
diff --git a/mailgun/mailing_list.py b/mailgun_sdk/mailing_list.py
similarity index 100%
rename from mailgun/mailing_list.py
rename to mailgun_sdk/mailing_list.py
diff --git a/setup.cfg b/setup.cfg
index b88034e..a597672 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,6 @@
 [metadata]
 description-file = README.md
+
+[tool.pytest]
+env =
+    MAILGUN_BASE_URL="https://api.eu.mailgun.net/v3"
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 64486e1..10f9cea 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 
 setup(
-    name='mailgun-python-sdk',
+    name='mailgun_sdk',
     version=VERSION,
     description='Mailgun Python SDK (unofficial)',
     author='Maxime Vdb',
@@ -15,7 +15,7 @@
     packages=find_packages(),
     install_requires=['requests', 'six'],
     license="MIT",
-    keywords="mailgun api sdk",
+    keywords="mailgun_sdk api sdk",
     url='https://github.com/m-vdb/mailgun-python-sdk',
     download_url='https://github.com/m-vdb/mailgun-python-sdk/archive/v{}.tar.gz'.format(VERSION),
     project_urls={
diff --git a/tests/domain/test_init.py b/tests/domain/test_init.py
index 93eed16..1ad89bc 100644
--- a/tests/domain/test_init.py
+++ b/tests/domain/test_init.py
@@ -1,8 +1,8 @@
 import unittest
 
-from mailgun.api import MailgunApi
-from mailgun.domain import Domain
-from mailgun.domain.logs import Logs
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.domain import Domain
+from mailgun_sdk.domain.logs import Logs
 
 api = MailgunApi()
 
diff --git a/tests/domain/test_ips.py b/tests/domain/test_ips.py
index d24a570..5db9268 100644
--- a/tests/domain/test_ips.py
+++ b/tests/domain/test_ips.py
@@ -2,8 +2,8 @@
 
 from mock import patch
 
-from mailgun.api import MailgunApi
-from mailgun.domain.ips import IPs
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.domain.ips import IPs
 
 
 api = MailgunApi()
diff --git a/tests/domain/test_logs.py b/tests/domain/test_logs.py
index 26eb816..511afcf 100644
--- a/tests/domain/test_logs.py
+++ b/tests/domain/test_logs.py
@@ -2,8 +2,8 @@
 
 from mock import patch
 
-from mailgun.api import MailgunApi
-from mailgun.domain.logs import Logs
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.domain.logs import Logs
 
 
 api = MailgunApi()
diff --git a/tests/domain/test_messages.py b/tests/domain/test_messages.py
new file mode 100644
index 0000000..6db4d4e
--- /dev/null
+++ b/tests/domain/test_messages.py
@@ -0,0 +1,68 @@
+import json
+import unittest
+import os
+
+from mock import patch, call
+
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.domain.messages import Messages
+
+
+class MessagesTestCase(unittest.TestCase):
+    def setUp(self):
+        super(MessagesTestCase, self).setUp()
+        api = MailgunApi(api_key="blah")
+        self.messages = Messages(api, api.domain('blah.net'), os.getenv('MAILGUN_BASE_URL'))
+
+    @patch.object(Messages, "request")
+    def test_send_via_template(self, request):
+        sending_variables = {"title": "API documentation", "body": "Sending messages with templates"}
+        
+        self.messages.send_via_template(
+            from_name="Al brenss",
+            from_email="albrens@domain.com",
+            to="ml@domain.com",
+            subject="Hello",
+            template="template.test",
+            variables=sending_variables
+        )
+
+        request.assert_called_with(
+            "POST",
+            data={
+                "from": "Al brenss <albrens@domain.com>",
+                "to": ["ml@domain.com"],
+                "subject": "Hello",
+                "template": "template.test",
+                "h:X-Mailgun-Variables": json.dumps(
+                    sending_variables
+                )
+            },
+        )
+
+    @patch.object(Messages, "request")
+    def test_send_with_tls(self, request):
+        sending_variables = {"title": "API documentation", "body": "Sending messages with templates"}
+        self.messages.require_tls = True
+        self.messages.send_via_template(
+            from_name="Al brenss",
+            from_email="albrens@domain.com",
+            to="ml@domain.com",
+            subject="Hello",
+            template="template.test",
+            variables=sending_variables
+        )
+
+        request.assert_called_with(
+            "POST",
+            data={
+                "from": "Al brenss <albrens@domain.com>",
+                "to": ["ml@domain.com"],
+                "subject": "Hello",
+                "template": "template.test",
+                "h:X-Mailgun-Variables": json.dumps(
+                    sending_variables
+                ),
+                "o:require-tls": "True"
+            },
+        )
diff --git a/tests/test_api.py b/tests/test_api.py
index e2f5af0..5a8ca17 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -3,9 +3,9 @@
 
 import requests
 
-from mailgun.api import MailgunApi
-from mailgun.domain import Domain
-from mailgun.mailing_list import MailingList
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.domain import Domain
+from mailgun_sdk.mailing_list import MailingList
 
 
 class MailgunApiTestCase(unittest.TestCase):
diff --git a/tests/test_base.py b/tests/test_base.py
index 7edca45..0684918 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -5,8 +5,8 @@
 from requests import Response
 from requests.exceptions import HTTPError
 
-from mailgun.api import MailgunApi
-from mailgun.base import ApiResource, ApiDomainResource, silence_error
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.base import ApiResource, ApiDomainResource, silence_error
 
 
 class FakeResource(ApiResource):
diff --git a/tests/test_init.py b/tests/test_init.py
index 88a619a..e5dea8c 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -1,13 +1,13 @@
 import unittest
 
-import mailgun
-from mailgun.api import MailgunApi
+import mailgun_sdk
+from mailgun_sdk.api import MailgunApi
 
 
 class MailgunInitTestCase(unittest.TestCase):
     def test_api(self):
-        self.assertIsInstance(mailgun.api, MailgunApi)
+        self.assertIsInstance(mailgun_sdk.api, MailgunApi)
 
     def test_initialize(self):
-        mailgun.initialize("api-key-xxx")
-        self.assertEqual(mailgun.api.api_key, "api-key-xxx")
+        mailgun_sdk.initialize("api-key-xxx")
+        self.assertEqual(mailgun_sdk.api.api_key, "api-key-xxx")
diff --git a/tests/test_ips.py b/tests/test_ips.py
index 6007da6..4b931bb 100644
--- a/tests/test_ips.py
+++ b/tests/test_ips.py
@@ -3,8 +3,8 @@
 
 from mock import patch
 
-from mailgun.api import MailgunApi
-from mailgun.ips import IPs
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.ips import IPs
 
 
 class IPsTestCase(unittest.TestCase):
diff --git a/tests/test_mailing_list.py b/tests/test_mailing_list.py
index 0002c43..7327395 100644
--- a/tests/test_mailing_list.py
+++ b/tests/test_mailing_list.py
@@ -3,8 +3,8 @@
 
 from mock import patch, call
 
-from mailgun.api import MailgunApi
-from mailgun.mailing_list import MailingList
+from mailgun_sdk.api import MailgunApi
+from mailgun_sdk.mailing_list import MailingList
 
 
 class MailingListTestCase(unittest.TestCase):
@@ -125,8 +125,7 @@ def test_update_multiple_list_members_several_batches(self, request):
                     "ml@domain.com/members.json",
                     data={
                         "members": json.dumps(
-                            ["member@gmail.com"]
-                            * self.mailing_list.MEMBERS_UPLOAD_LIMIT
+                            ["member@gmail.com"] * self.mailing_list.MEMBERS_UPLOAD_LIMIT
                         ),
                         "upsert": "yes",
                     },
diff --git a/tox.ini b/tox.ini
index 67ffbc5..42d0fd4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,6 @@
 [tox]
-envlist = py27,py36
+envlist = py3{6,7,8,9}, pypy
+
 
 [testenv]
 passenv = TRAVIS TRAVIS_*