diff --git a/CHANGELOG.md b/CHANGELOG.md
index 592313e5..adfacfe4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,8 +6,8 @@ All notable changes to this project will be documented in this file.
 ### Improvements
 - Add the `prunetokenbucket` management command
 - Show check counts in JSON "badges" (#251)
-- Webhooks support PUT method (#249)
-- Webhooks can have different request bodies and headers for "up" and "events" (#249)
+- Webhooks support HTTP PUT (#249)
+- Webhooks can use different req. bodies and headers for "up" and "down" events. (#249)
 
 ### Bug Fixes
 - Fix badges for tags containing special characters (#240, #237)
diff --git a/hc/api/tests/test_channel_model.py b/hc/api/tests/test_channel_model.py
new file mode 100644
index 00000000..d64163cc
--- /dev/null
+++ b/hc/api/tests/test_channel_model.py
@@ -0,0 +1,151 @@
+import json
+
+from hc.api.models import Channel
+from hc.test import BaseTestCase
+
+
+class ChannelModelTestCase(BaseTestCase):
+    def test_webhook_spec_handles_plain_single_address(self):
+        c = Channel(kind="webhook")
+        c.value = "http://example.org"
+        self.assertEqual(
+            c.down_webhook_spec,
+            {"method": "GET", "url": "http://example.org", "body": "", "headers": {}},
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec, {"method": "GET", "url": "", "body": "", "headers": {}}
+        )
+
+    def test_webhook_spec_handles_plain_pair(self):
+        c = Channel(kind="webhook")
+        c.value = "http://example.org\nhttp://example.com/up/"
+        self.assertEqual(
+            c.down_webhook_spec,
+            {"method": "GET", "url": "http://example.org", "body": "", "headers": {}},
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec,
+            {
+                "method": "GET",
+                "url": "http://example.com/up/",
+                "body": "",
+                "headers": {},
+            },
+        )
+
+    def test_webhook_spec_handles_plain_post(self):
+        c = Channel(kind="webhook")
+        c.value = "http://example.org\n\nhello world"
+        self.assertEqual(
+            c.down_webhook_spec,
+            {
+                "method": "POST",
+                "url": "http://example.org",
+                "body": "hello world",
+                "headers": {},
+            },
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec,
+            {"method": "POST", "url": "", "body": "hello world", "headers": {}},
+        )
+
+    def test_webhook_spec_handles_legacy_get(self):
+        c = Channel(kind="webhook")
+        c.value = json.dumps(
+            {
+                "url_down": "http://example.org",
+                "url_up": "http://example.org/up/",
+                "headers": {"X-Name": "value"},
+                "post_data": "",
+            }
+        )
+
+        self.assertEqual(
+            c.down_webhook_spec,
+            {
+                "method": "GET",
+                "url": "http://example.org",
+                "body": "",
+                "headers": {"X-Name": "value"},
+            },
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec,
+            {
+                "method": "GET",
+                "url": "http://example.org/up/",
+                "body": "",
+                "headers": {"X-Name": "value"},
+            },
+        )
+
+    def test_webhook_spec_handles_legacy_post(self):
+        c = Channel(kind="webhook")
+        c.value = json.dumps(
+            {
+                "url_down": "http://example.org",
+                "url_up": "http://example.org/up/",
+                "headers": {"X-Name": "value"},
+                "post_data": "hello world",
+            }
+        )
+
+        self.assertEqual(
+            c.down_webhook_spec,
+            {
+                "method": "POST",
+                "url": "http://example.org",
+                "body": "hello world",
+                "headers": {"X-Name": "value"},
+            },
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec,
+            {
+                "method": "POST",
+                "url": "http://example.org/up/",
+                "body": "hello world",
+                "headers": {"X-Name": "value"},
+            },
+        )
+
+    def test_webhook_spec_handles_mixed(self):
+        c = Channel(kind="webhook")
+        c.value = json.dumps(
+            {
+                "method_down": "GET",
+                "url_down": "http://example.org",
+                "body_down": "",
+                "headers_down": {"X-Status": "X"},
+                "method_up": "POST",
+                "url_up": "http://example.org/up/",
+                "body_up": "hello world",
+                "headers_up": {"X-Status": "OK"},
+            }
+        )
+
+        self.assertEqual(
+            c.down_webhook_spec,
+            {
+                "method": "GET",
+                "url": "http://example.org",
+                "body": "",
+                "headers": {"X-Status": "X"},
+            },
+        )
+
+        self.assertEqual(
+            c.up_webhook_spec,
+            {
+                "method": "POST",
+                "url": "http://example.org/up/",
+                "body": "hello world",
+                "headers": {"X-Status": "OK"},
+            },
+        )
diff --git a/hc/api/tests/test_notify.py b/hc/api/tests/test_notify.py
index 24303846..6eac293a 100644
--- a/hc/api/tests/test_notify.py
+++ b/hc/api/tests/test_notify.py
@@ -146,8 +146,13 @@ class NotifyTestCase(BaseTestCase):
         self.assertIsInstance(kwargs["data"], bytes)
 
     @patch("hc.api.transports.requests.request")
-    def test_legacy_webhooks_handle_json_value(self, mock_request):
-        definition = {"url_down": "http://foo.com", "post_data": "", "headers": {}}
+    def test_webhooks_handle_json_value(self, mock_request):
+        definition = {
+            "method_down": "GET",
+            "url_down": "http://foo.com",
+            "body_down": "",
+            "headers_down": {},
+        }
         self._setup_data("webhook", json.dumps(definition))
         self.channel.notify(self.check)
 
@@ -156,23 +161,13 @@ class NotifyTestCase(BaseTestCase):
             "get", "http://foo.com", headers=headers, timeout=5
         )
 
-    @patch("hc.api.transports.requests.request")
-    def test_legacy_webhooks_handle_json_up_event(self, mock_request):
-        definition = {"url_up": "http://bar", "post_data": "", "headers": {}}
-
-        self._setup_data("webhook", json.dumps(definition), status="up")
-        self.channel.notify(self.check)
-
-        headers = {"User-Agent": "healthchecks.io"}
-        mock_request.assert_called_with("get", "http://bar", headers=headers, timeout=5)
-
     @patch("hc.api.transports.requests.request")
     def test_webhooks_handle_json_up_event(self, mock_request):
         definition = {
             "method_up": "GET",
             "url_up": "http://bar",
             "body_up": "",
-            "headers_up": {}
+            "headers_up": {},
         }
 
         self._setup_data("webhook", json.dumps(definition), status="up")
@@ -181,22 +176,6 @@ class NotifyTestCase(BaseTestCase):
         headers = {"User-Agent": "healthchecks.io"}
         mock_request.assert_called_with("get", "http://bar", headers=headers, timeout=5)
 
-    @patch("hc.api.transports.requests.request")
-    def test_legacy_webhooks_handle_post_headers(self, mock_request):
-        definition = {
-            "url_down": "http://foo.com",
-            "post_data": "data",
-            "headers": {"Content-Type": "application/json"},
-        }
-
-        self._setup_data("webhook", json.dumps(definition))
-        self.channel.notify(self.check)
-
-        headers = {"User-Agent": "healthchecks.io", "Content-Type": "application/json"}
-        mock_request.assert_called_with(
-            "post", "http://foo.com", data=b"data", headers=headers, timeout=5
-        )
-
     @patch("hc.api.transports.requests.request")
     def test_webhooks_handle_post_headers(self, mock_request):
         definition = {
@@ -214,22 +193,6 @@ class NotifyTestCase(BaseTestCase):
             "post", "http://foo.com", data=b"data", headers=headers, timeout=5
         )
 
-    @patch("hc.api.transports.requests.request")
-    def test_legacy_webhooks_handle_get_headers(self, mock_request):
-        definition = {
-            "url_down": "http://foo.com",
-            "post_data": "",
-            "headers": {"Content-Type": "application/json"},
-        }
-
-        self._setup_data("webhook", json.dumps(definition))
-        self.channel.notify(self.check)
-
-        headers = {"User-Agent": "healthchecks.io", "Content-Type": "application/json"}
-        mock_request.assert_called_with(
-            "get", "http://foo.com", headers=headers, timeout=5
-        )
-
     @patch("hc.api.transports.requests.request")
     def test_webhooks_handle_get_headers(self, mock_request):
         definition = {
@@ -247,22 +210,6 @@ class NotifyTestCase(BaseTestCase):
             "get", "http://foo.com", headers=headers, timeout=5
         )
 
-    @patch("hc.api.transports.requests.request")
-    def test_legacy_webhooks_allow_user_agent_override(self, mock_request):
-        definition = {
-            "url_down": "http://foo.com",
-            "post_data": "",
-            "headers": {"User-Agent": "My-Agent"},
-        }
-
-        self._setup_data("webhook", json.dumps(definition))
-        self.channel.notify(self.check)
-
-        headers = {"User-Agent": "My-Agent"}
-        mock_request.assert_called_with(
-            "get", "http://foo.com", headers=headers, timeout=5
-        )
-
     @patch("hc.api.transports.requests.request")
     def test_webhooks_allow_user_agent_override(self, mock_request):
         definition = {