diff --git a/README.md b/README.md
index d6a96523..e7532ad4 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,7 @@ The table below identifies the services this tool supports and some example serv
 | [SendGrid](https://github.com/caronc/apprise/wiki/Notify_sendgrid) | sendgrid://  | (TCP) 443   | sendgrid://APIToken:FromEmail/<br />sendgrid://APIToken:FromEmail/ToEmail<br />sendgrid://APIToken:FromEmail/ToEmail1/ToEmail2/ToEmailN/
 | [ServerChan](https://github.com/caronc/apprise/wiki/Notify_serverchan) | schan://   | (TCP) 443    | schan://sendkey/
 | [Signal API](https://github.com/caronc/apprise/wiki/Notify_signal) | signal://  or signals:// | (TCP) 80 or 443  | signal://hostname:port/FromPhoneNo<br/>signal://hostname:port/FromPhoneNo/ToPhoneNo<br/>signal://hostname:port/FromPhoneNo/ToPhoneNo1/ToPhoneNo2/ToPhoneNoN/
+| [SIGNL4](https://github.com/caronc/apprise/wiki/Notify_signl4) | signl4://  | (TCP) 80 or 443  | signl4://hostname
 | [SimplePush](https://github.com/caronc/apprise/wiki/Notify_simplepush) | spush://   | (TCP) 443    | spush://apikey<br />spush://salt:password@apikey<br />spush://apikey?event=Apprise
 | [Slack](https://github.com/caronc/apprise/wiki/Notify_slack) | slack://  | (TCP) 443   | slack://TokenA/TokenB/TokenC/<br />slack://TokenA/TokenB/TokenC/Channel<br />slack://botname@TokenA/TokenB/TokenC/Channel<br />slack://user@TokenA/TokenB/TokenC/Channel1/Channel2/ChannelN
 | [SMTP2Go](https://github.com/caronc/apprise/wiki/Notify_smtp2go) | smtp2go:// | (TCP) 443 | smtp2go://user@hostname/apikey<br />smtp2go://user@hostname/apikey/email<br />smtp2go://user@hostname/apikey/email1/email2/emailN<br />smtp2go://user@hostname/apikey/?name="From%20User"
diff --git a/apprise/plugins/signl4.py b/apprise/plugins/signl4.py
new file mode 100644
index 00000000..fab1eeeb
--- /dev/null
+++ b/apprise/plugins/signl4.py
@@ -0,0 +1,350 @@
+# BSD 2-Clause License
+#
+# Apprise - Push Notification Library.
+# Copyright (c) 2025, Chris Caron <lead2gold@gmail.com>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# API Refererence:
+#   - https://docs.signl4.com/integrations/webhook/webhook.html
+#
+
+from json import dumps
+from typing import Any, Optional
+
+import requests
+
+from ..common import NotifyType
+from ..locale import gettext_lazy as _
+from ..url import PrivacyMode
+from ..utils.parse import parse_bool, validate_regex
+from .base import NotifyBase
+
+
+class NotifySIGNL4(NotifyBase):
+    """
+    A wrapper for SIGNL4 Notifications
+    """
+
+    # The default descriptive name associated with the Notification
+    service_name = "SIGNL4"
+
+    # The services URL
+    service_url = "https://signl4.com/"
+
+    # Secure Protocol
+    secure_protocol = "signl4"
+
+    # A URL that takes you to the setup/help of the specific protocol
+    setup_url = "https://github.com/caronc/apprise/wiki/Notify_signl4"
+
+    # Our event action type
+    event_action = "trigger"
+
+    # Our default notification URL
+    notify_url = "https://connect.signl4.com/webhook/{secret}/"
+
+    # Define object templates
+    templates = (
+        "{schema}://{secret}",
+    )
+
+    # Define our template tokens
+    template_tokens = dict(NotifyBase.template_tokens, **{
+        # SIGNL4 team or integration secret
+        "secret": {
+            "name": _("Secret"),
+            "type": "string",
+            "private": True,
+            "required": True
+        },
+    })
+
+    # Define our template arguments
+    template_args = dict(NotifyBase.template_args, **{
+        "service": {
+            "name": _("Service"),
+            "type": "string",
+        },
+        "location": {
+            "name": _("Location"),
+            "type": "string",
+        },
+        "alerting_scenario": {
+            "name": _("Alerting Scenario"),
+            "type": "string",
+        },
+        "filtering": {
+            "name": _("Filtering"),
+            "type": "bool",
+            "default": False,
+        },
+        "external_id": {
+            "name": _("External ID"),
+            "type": "string",
+        },
+        "status": {
+            "name": _("Status"),
+            "type": "string",
+        },
+    })
+
+    def __init__(
+        self,
+        secret: str,
+        service: Optional[str] = None,
+        location: Optional[str] = None,
+        alerting_scenario: Optional[str] = None,
+        filtering: Optional[bool] = None,
+        external_id: Optional[str] = None,
+        status: Optional[str] = None,
+        **kwargs: Any
+    ) -> None:
+        """
+        Initialize SIGNL4 Object
+        """
+        super().__init__(**kwargs)
+
+        # SIGNL4 team or integration secret
+        self.secret = validate_regex(secret)
+        if not self.secret:
+            msg = "An invalid SIGNL4 team or integration secret " \
+                  "({}) was specified.".format(secret)
+            self.logger.warning(msg)
+            raise TypeError(msg)
+
+        # A service option for notifications
+        self.service = service
+
+        # A location option for notifications
+        self.location = location
+
+        # A alerting_scenario option for notifications
+        self.alerting_scenario = alerting_scenario
+
+        # A filtering option for notifications
+        self.filtering = (
+            self.template_args["filtering"]["default"]
+            if filtering is None
+            else bool(filtering)
+        )
+
+        # A external_id option for notifications
+        self.external_id = external_id
+
+        # A location option for notifications
+        self.status = status
+
+        return
+
+    def send(self, body, title="", notify_type=NotifyType.INFO, **kwargs):
+        """
+        Send our SIGNL4 Notification
+        """
+
+        # Prepare our headers
+        headers = {
+            "Content-Type": "application/json",
+        }
+
+        # Prepare our persistent_notification.create payload
+        payload = {
+            "title": title if title else self.app_desc,
+            "body": body,
+            "X-S4-SourceSystem": self.app_id,
+        }
+
+        if self.service:
+            payload["X-S4-Service"] = self.service
+
+        if self.alerting_scenario:
+            payload["X-S4-AlertingScenario"] = self.alerting_scenario
+
+        if self.location:
+            payload["X-S4-Location"] = self.location
+
+        if self.filtering:
+            payload["X-S4-Filtering"] = self.filtering
+
+        if self.external_id:
+            payload["X-S4-ExternalID"] = self.external_id
+
+        if self.status:
+            payload["X-S4-Status"] = self.status
+
+        # Prepare our URL
+        notify_url = self.notify_url.format(secret=self.secret)
+
+        self.logger.debug(
+            "SIGNL4 POST URL: %s (cert_verify=%s)",
+            notify_url, self.verify_certificate)
+        self.logger.debug("SIGNL4 Payload: %r", payload)
+
+
+        # Always call throttle before any remote server i/o is made
+        self.throttle()
+
+        try:
+            r = requests.post(
+                notify_url,
+                data=dumps(payload),
+                headers=headers,
+                verify=self.verify_certificate,
+                timeout=self.request_timeout,
+            )
+            if r.status_code not in (
+                    requests.codes.ok, requests.codes.created,
+                    requests.codes.accepted):
+                # We had a problem
+                status_str = \
+                    NotifySIGNL4.http_response_code_lookup(
+                        r.status_code)
+
+                self.logger.warning(
+                    "Failed to send SIGNL4 notification: "
+                    "{}{}error={}.".format(
+                        status_str,
+                        ", " if status_str else "",
+                        r.status_code))
+
+                self.logger.debug("Response Details:\r\n%r", r.content)
+
+                # Return; we're done
+                return False
+
+            else:
+                self.logger.info("Sent SIGNL4 notification.")
+
+        except requests.RequestException as e:
+            self.logger.warning(
+                "A Connection error occurred sending SIGNL4 "
+                "notification to %s", self.host)
+            self.logger.debug("Socket Exception: %s", str(e))
+
+            # Return; we're done
+            return False
+
+        return True
+
+    @property
+    def url_identifier(self):
+        """
+        Returns all of the identifiers that make this URL unique from
+        another simliar one. Targets or end points should never be identified
+        here.
+        """
+        return (
+            self.secure_protocol, self.secret,
+        )
+
+    def url(self, privacy=False, *args, **kwargs):
+        """
+        Returns the URL built dynamically based on specified arguments.
+        """
+
+        # Define any URL parameters
+        params = {}
+
+        if self.service is not None:
+            params["service"] = self.service
+
+        if self.location is not None:
+            params["location"] = self.location
+
+        if self.alerting_scenario is not None:
+            params["alerting_scenario"] = self.alerting_scenario
+
+        if self.filtering != self.template_args["filtering"]["default"]:
+            # Only add filtering if it is not the default value
+            params["filtering"] = "yes" if self.filtering else "no"
+
+        if self.external_id is not None:
+            params["external_id"] = self.external_id
+
+        if self.status is not None:
+            params["status"] = self.status
+
+        # Extend our parameters
+        params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
+
+        url = "{schema}://{secret}"
+
+        return url.format(
+            schema=self.secure_protocol,
+            # never encode hostname since we're expecting it to be a valid one
+            secret=self.pprint(
+                self.secret, privacy, mode=PrivacyMode.Secret, safe=""),
+            params=NotifySIGNL4.urlencode(params),
+        )
+
+    @staticmethod
+    def parse_url(url):
+        """
+        Parses the URL and returns enough arguments that can allow
+        us to re-instantiate this object.
+        """
+
+        results = NotifyBase.parse_url(url, verify_host=False)
+        if not results:
+            # We're done early as we couldn"t load the results
+            return results
+
+        # The "secret" makes it easier to use yaml configuration
+        if "secret" in results["qsd"] and \
+                len(results["qsd"]["secret"]):
+            results["secret"] = \
+                NotifySIGNL4.unquote(results["qsd"]["secret"])
+        else:
+            results["secret"] = \
+                NotifySIGNL4.unquote(results["host"])
+
+        if "service" in results["qsd"] and len(results["qsd"]["service"]):
+            results["service"] = \
+                NotifySIGNL4.unquote(results["qsd"]["service"])
+
+        if "location" in results["qsd"] and len(results["qsd"]["location"]):
+            results["location"] = \
+                NotifySIGNL4.unquote(results["qsd"]["location"])
+
+        if "alerting_scenario" in results["qsd"] and \
+            len(results["qsd"]["alerting_scenario"]):
+            results["alerting_scenario"] = \
+                NotifySIGNL4.unquote(results["qsd"]["alerting_scenario"])
+
+        if "filtering" in results["qsd"] and len(results["qsd"]["filtering"]):
+            results["filtering"] = \
+                parse_bool(
+                    NotifySIGNL4.unquote(
+                        results["qsd"]["filtering"],
+                        NotifySIGNL4.template_args["filtering"]["default"]))
+
+        if "external_id" in results["qsd"] and \
+            len(results["qsd"]["external_id"]):
+            results["external_id"] = \
+                NotifySIGNL4.unquote(results["qsd"]["external_id"])
+
+        if "status" in results["qsd"] and len(results["qsd"]["status"]):
+            results["status"] = \
+                NotifySIGNL4.unquote(results["qsd"]["status"])
+
+        return results
diff --git a/packaging/redhat/python-apprise.spec b/packaging/redhat/python-apprise.spec
index 68b628db..253ad8d6 100644
--- a/packaging/redhat/python-apprise.spec
+++ b/packaging/redhat/python-apprise.spec
@@ -69,7 +69,7 @@ notification services. It supports sending alerts to platforms such as: \
 `ParsePlatform`, `Plivo`, `PopcornNotify`, `Prowl`, `Pushalot`, \
 `PushBullet`, `Pushjet`, `PushMe`, `Pushover`, `Pushplus`, `PushSafer`, \
 `Pushy`, `PushDeer`, `QQ Push`, `Revolt`, `Reddit`, `Resend`, `Rocket.Chat`, \
-`RSyslog`, `SendGrid`, `ServerChan`, `Seven`, `SFR`, `Signal`, \
+`RSyslog`, `SendGrid`, `ServerChan`, `Seven`, `SFR`, `Signal`, `SIGNL4`, \
 `SimplePush`, `Sinch`, `Slack`, `SMPP`, `SMSEagle`, `SMS Manager`, \
 `SMTP2Go`, `SparkPost`, `Splunk`, `Spike`, `Spug Push`, `Super Toasty`, \
 `Streamlabs`, `Stride`, `Synology Chat`, `Syslog`, `Techulus Push`, \
diff --git a/pyproject.toml b/pyproject.toml
index bca515f9..18f3a576 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -143,6 +143,7 @@ keywords = [
     "Seven",
     "SFR",
     "Signal",
+    "SIGNL4",
     "SimplePush",
     "Sinch",
     "Slack",
diff --git a/tests/test_plugin_signl4.py b/tests/test_plugin_signl4.py
new file mode 100644
index 00000000..a7a35835
--- /dev/null
+++ b/tests/test_plugin_signl4.py
@@ -0,0 +1,173 @@
+# BSD 2-Clause License
+#
+# Apprise - Push Notification Library.
+# Copyright (c) 2025, Chris Caron <lead2gold@gmail.com>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.# BSD 2-Clause License
+
+from json import dumps
+
+# Disable logging for a cleaner testing output
+import logging
+
+from helpers import AppriseURLTester
+
+from apprise.plugins.signl4 import (
+    NotifySIGNL4,
+    NotifyType,
+)
+
+logging.disable(logging.CRITICAL)
+
+SIGNL4_GOOD_RESPONSE = dumps({
+    "eventId": "2516485120936941747_76d5cf30-27d2-4529-84ed-f31a8f2c72b1",
+})
+
+# Our Testing URLs
+apprise_url_tests = (
+    (
+        "signl4://",
+        {
+            # We failed to identify any valid authentication
+            "instance": TypeError,
+        },
+    ),
+    (
+        "signl4://:@/",
+        {
+            # We failed to identify any valid authentication
+            "instance": TypeError,
+        },
+    ),
+    (
+        "signl4://%20%20/",
+        {
+            # invalid secret specified
+            "instance": TypeError,
+        },
+    ),
+    (
+        "signl4://secret/",
+        {
+            # No targets specified; this is allowed
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://?secret=secret",
+        {
+            # No targets specified; this is allowed
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/?service=IoT",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/?filtering=yes",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/?location=40.6413111,-73.7781391",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/?alerting_scenario=singl4_ack",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/?filtering=False",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+        (
+        "signl4://secret/?external_id=ar1234&status=new",
+        {
+            # European Region
+            "instance": NotifySIGNL4,
+            "notify_type": NotifyType.FAILURE,
+            # Our response expected server response
+            "requests_response_text": SIGNL4_GOOD_RESPONSE,
+        },
+    ),
+    (
+        "signl4://secret/",
+        {
+            "instance": NotifySIGNL4,
+            # throw a bizzare code forcing us to fail to look it up
+            "response": False,
+            "requests_response_code": 999,
+        },
+    ),
+    (
+        "signl4://secret/",
+        {
+            "instance": NotifySIGNL4,
+            # Throws a series of i/o exceptions with this flag
+            # is set and tests that we gracfully handle them
+            "test_requests_exceptions": True,
+        },
+    ),
+)
+
+def test_plugin_signl4_urls():
+    """NotifySIGNL4() Apprise URLs."""
+
+    # Run our general tests
+    AppriseURLTester(tests=apprise_url_tests).run_all()