diff --git a/homeassistant/components/pushover/const.py b/homeassistant/components/pushover/const.py
index af5411322972..d890cf014b94 100644
--- a/homeassistant/components/pushover/const.py
+++ b/homeassistant/components/pushover/const.py
@@ -15,6 +15,8 @@ ATTR_SOUND: Final = "sound"
 ATTR_HTML: Final = "html"
 ATTR_CALLBACK_URL: Final = "callback_url"
 ATTR_EXPIRE: Final = "expire"
+ATTR_TTL: Final = "ttl"
+ATTR_DATA: Final = "data"
 ATTR_TIMESTAMP: Final = "timestamp"
 
 CONF_USER_KEY: Final = "user_key"
diff --git a/homeassistant/components/pushover/notify.py b/homeassistant/components/pushover/notify.py
index 34ee1d08bdda..af27fa26639c 100644
--- a/homeassistant/components/pushover/notify.py
+++ b/homeassistant/components/pushover/notify.py
@@ -27,6 +27,7 @@ from .const import (
     ATTR_RETRY,
     ATTR_SOUND,
     ATTR_TIMESTAMP,
+    ATTR_TTL,
     ATTR_URL,
     ATTR_URL_TITLE,
     CONF_USER_KEY,
@@ -66,12 +67,13 @@ class PushoverNotificationService(BaseNotificationService):
 
         # Extract params from data dict
         title = kwargs.get(ATTR_TITLE, ATTR_TITLE_DEFAULT)
-        data = dict(kwargs.get(ATTR_DATA) or {})
+        data = kwargs.get(ATTR_DATA, {})
         url = data.get(ATTR_URL)
         url_title = data.get(ATTR_URL_TITLE)
         priority = data.get(ATTR_PRIORITY)
         retry = data.get(ATTR_RETRY)
         expire = data.get(ATTR_EXPIRE)
+        ttl = data.get(ATTR_TTL)
         callback_url = data.get(ATTR_CALLBACK_URL)
         timestamp = data.get(ATTR_TIMESTAMP)
         sound = data.get(ATTR_SOUND)
@@ -98,20 +100,21 @@ class PushoverNotificationService(BaseNotificationService):
 
         try:
             self.pushover.send_message(
-                self._user_key,
-                message,
-                ",".join(kwargs.get(ATTR_TARGET, [])),
-                title,
-                url,
-                url_title,
-                image,
-                priority,
-                retry,
-                expire,
-                callback_url,
-                timestamp,
-                sound,
-                html,
+                user=self._user_key,
+                message=message,
+                device=",".join(kwargs.get(ATTR_TARGET, [])),
+                title=title,
+                url=url,
+                url_title=url_title,
+                image=image,
+                priority=priority,
+                retry=retry,
+                expire=expire,
+                callback_url=callback_url,
+                timestamp=timestamp,
+                sound=sound,
+                html=html,
+                ttl=ttl,
             )
         except BadAPIRequestError as err:
             raise HomeAssistantError(str(err)) from err
diff --git a/tests/components/pushover/test_notify.py b/tests/components/pushover/test_notify.py
new file mode 100644
index 000000000000..52f581855837
--- /dev/null
+++ b/tests/components/pushover/test_notify.py
@@ -0,0 +1,71 @@
+"""Test the pushover notify platform."""
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from homeassistant.components.pushover import DOMAIN
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+@pytest.fixture(autouse=False)
+def mock_pushover():
+    """Mock pushover."""
+    with patch(
+        "pushover_complete.PushoverAPI._generic_post", return_value={}
+    ) as mock_generic_post:
+        yield mock_generic_post
+
+
+@pytest.fixture
+def mock_send_message():
+    """Patch PushoverAPI.send_message for TTL test."""
+    with patch(
+        "homeassistant.components.pushover.notify.PushoverAPI.send_message"
+    ) as mock:
+        yield mock
+
+
+async def test_send_message(
+    hass: HomeAssistant, mock_pushover: MagicMock, mock_send_message: MagicMock
+) -> None:
+    """Test sending a message."""
+    entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "name": "pushover",
+            "api_key": "API_KEY",
+            "user_key": "USER_KEY",
+        },
+    )
+    entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+
+    await hass.services.async_call(
+        "notify",
+        "pushover",
+        {"message": "Hello TTL", "data": {"ttl": 900}},
+        blocking=True,
+    )
+
+    mock_send_message.assert_called_once_with(
+        user="USER_KEY",
+        message="Hello TTL",
+        device="",
+        title="Home Assistant",
+        url=None,
+        url_title=None,
+        image=None,
+        priority=None,
+        retry=None,
+        expire=None,
+        callback_url=None,
+        timestamp=None,
+        sound=None,
+        html=0,
+        ttl=900,
+    )