diff --git a/src/SparkPost.Tests/DataMapperTests.cs b/src/SparkPost.Tests/DataMapperTests.cs
index 9a7a0f49..d82a0ce0 100644
--- a/src/SparkPost.Tests/DataMapperTests.cs
+++ b/src/SparkPost.Tests/DataMapperTests.cs
@@ -890,5 +890,47 @@ public void It_should_map_anything_using_our_conventions()
                 ((string)result["the_date"]).Substring(0, 16).ShouldEqual("2016-01-02T03:04");
             }
         }
+
+        [TestFixture]
+        public class RelayWebhookTests
+        {
+            [SetUp]
+            public void Setup()
+            {
+                relayWebhook = new RelayWebhook();
+                mapper = new DataMapper("v1");
+            }
+
+            private RelayWebhook relayWebhook;
+            private DataMapper mapper;
+
+            [Test]
+            public void name()
+            {
+                var value = Guid.NewGuid().ToString();
+                relayWebhook.Name = value;
+                mapper.ToDictionary(relayWebhook)["name"].ShouldEqual(value);
+            }
+
+            [Test]
+            public void match_domain()
+            {
+                var value = Guid.NewGuid().ToString();
+                relayWebhook.Match = new RelayWebhookMatch {Domain = value};
+                mapper.ToDictionary(relayWebhook)["match"]
+                    .CastAs<IDictionary<string, object>>()
+                    ["domain"].ShouldEqual(value);
+            }
+
+            [Test]
+            public void match_protocol()
+            {
+                var value = Guid.NewGuid().ToString();
+                relayWebhook.Match = new RelayWebhookMatch {Protocol = value};
+                mapper.ToDictionary(relayWebhook)["match"]
+                    .CastAs<IDictionary<string, object>>()
+                    ["protocol"].ShouldEqual(value);
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/src/SparkPost.Tests/RelayWebhookTests.cs b/src/SparkPost.Tests/RelayWebhookTests.cs
new file mode 100644
index 00000000..710e8585
--- /dev/null
+++ b/src/SparkPost.Tests/RelayWebhookTests.cs
@@ -0,0 +1,24 @@
+using NUnit.Framework;
+using Should;
+
+namespace SparkPost.Tests
+{
+    public class RelayWebhookTests
+    {
+        [TestFixture]
+        public class DefaultTests
+        {
+            [Test]
+            public void It_should_initialize_match()
+            {
+                (new RelayWebhook()).Match.ShouldNotBeNull();
+            }
+
+            [Test]
+            public void It_should_initialize_match_protocol()
+            {
+                (new RelayWebhook()).Match.Protocol.ShouldEqual("SMTP");
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/SparkPost.Tests/SparkPost.Tests.csproj b/src/SparkPost.Tests/SparkPost.Tests.csproj
index 4c5379ff..851cfef8 100644
--- a/src/SparkPost.Tests/SparkPost.Tests.csproj
+++ b/src/SparkPost.Tests/SparkPost.Tests.csproj
@@ -102,6 +102,7 @@
     <Compile Include="TransmissionTests.cs" />
     <Compile Include="SubaccountTest.cs" />
     <Compile Include="Utilities\SnakeCaseTests.cs" />
+    <Compile Include="RelayWebhookTests.cs" />
     <Compile Include="WebhookTests.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/SparkPost/Client.cs b/src/SparkPost/Client.cs
index af0e34f4..6254845b 100644
--- a/src/SparkPost/Client.cs
+++ b/src/SparkPost/Client.cs
@@ -39,6 +39,7 @@ public Client(string apiKey, string apiHost, long subAccountId)
             Subaccounts = new Subaccounts(this, requestSender, dataMapper);
             MessageEvents = new MessageEvents(this, requestSender);
             InboundDomains = new InboundDomains(this, requestSender, dataMapper);
+            RelayWebhooks = new RelayWebhooks(this, requestSender, dataMapper);
 
             CustomSettings = new Settings();
         }
@@ -53,6 +54,7 @@ public Client(string apiKey, string apiHost, long subAccountId)
         public ISubaccounts Subaccounts { get; }
         public IMessageEvents MessageEvents { get; }
         public IInboundDomains InboundDomains { get; }
+        public IRelayWebhooks RelayWebhooks { get; }
         public string Version => "v1";
 
         public Settings CustomSettings { get; }
diff --git a/src/SparkPost/DataMapper.cs b/src/SparkPost/DataMapper.cs
index 5c817591..bc6759fb 100644
--- a/src/SparkPost/DataMapper.cs
+++ b/src/SparkPost/DataMapper.cs
@@ -22,7 +22,9 @@ public interface IDataMapper
         IDictionary<string, object> ToDictionary(Suppression suppression);
         IDictionary<string, object> ToDictionary(Webhook webhook);
         IDictionary<string, object> ToDictionary(Subaccount subaccount);
+        IDictionary<string, object> ToDictionary(RelayWebhook relayWebhook);
         IDictionary<string, object> ToDictionary(InboundDomain inboundDomain);
+        IDictionary<string, object> ToDictionary(RelayWebhookMatch relayWebhookMatch);
         IDictionary<string, object> CatchAll(object anything);
         object GetTheValue(Type propertyType, object value);
         IDictionary<Type, MethodInfo> ToDictionaryMethods();
@@ -131,6 +133,16 @@ public IDictionary<string, object> ToDictionary(InboundDomain inboundDomain)
             return WithCommonConventions(inboundDomain);
         }
 
+        public IDictionary<string, object> ToDictionary(RelayWebhook relayWebhook)
+        {
+            return WithCommonConventions(relayWebhook);
+        }
+
+        public IDictionary<string, object> ToDictionary(RelayWebhookMatch relayWebhookMatch)
+        {
+            return WithCommonConventions(relayWebhookMatch);
+        }
+
         public IDictionary<string, object> ToDictionary(MessageEventsQuery query)
         {
             return WithCommonConventions(query, new Dictionary<string, object>()
diff --git a/src/SparkPost/IClient.cs b/src/SparkPost/IClient.cs
index 24c260d4..85ba6a21 100644
--- a/src/SparkPost/IClient.cs
+++ b/src/SparkPost/IClient.cs
@@ -44,6 +44,11 @@ public interface IClient
         /// Gets access to the inbound domains resource of the SparkPost API.
         /// </summary>
         IInboundDomains InboundDomains { get; }
+        
+        /// <summary>
+        /// Gets access to the relay webhooks resource of the SparkPost API.
+        /// </summary>
+        IRelayWebhooks RelayWebhooks { get; }
 
         /// <summary>
         /// Gets the API version supported by this client.
diff --git a/src/SparkPost/ListRelayWebhookResponse.cs b/src/SparkPost/ListRelayWebhookResponse.cs
new file mode 100644
index 00000000..f35c9430
--- /dev/null
+++ b/src/SparkPost/ListRelayWebhookResponse.cs
@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace SparkPost
+{
+    public class ListRelayWebhookResponse : Response
+    {
+        public IEnumerable<RelayWebhook> RelayWebhooks { get; set; }
+
+        public static ListRelayWebhookResponse CreateFromResponse(Response response)
+        {
+            var result = new ListRelayWebhookResponse();
+
+            LeftRight.SetValuesToMatch(result, response);
+
+            result.RelayWebhooks = BuildTheRelayWebhooksFrom(response);
+
+            return result;
+        }
+
+        private static IEnumerable<RelayWebhook> BuildTheRelayWebhooksFrom(Response response)
+        {
+            var results = JsonConvert.DeserializeObject<dynamic>(response.Content).results;
+
+            var relayWebhooks = new List<RelayWebhook>();
+            foreach (var r in results)
+                relayWebhooks.Add(ConvertToARelayWebhook(r));
+
+            return relayWebhooks;
+        }
+
+        internal static RelayWebhook ConvertToARelayWebhook(dynamic item)
+        {
+            return new RelayWebhook
+            {
+                Id = item.id,
+                Name = item.name,
+                Target = item.target,
+                AuthToken = item.auth_token,
+                Match = new RelayWebhookMatch
+                {
+                    Protocol = item.match.protocol,
+                    Domain = item.match.domain
+                }
+            };
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/SparkPost/RelayWebhook.cs b/src/SparkPost/RelayWebhook.cs
new file mode 100644
index 00000000..d81b208a
--- /dev/null
+++ b/src/SparkPost/RelayWebhook.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+
+namespace SparkPost
+{
+    public class RelayWebhook
+    {
+        public RelayWebhook()
+        {
+            Match = new RelayWebhookMatch();
+        }
+
+        public string Id { get; set; }
+        public string Target { get; set; }
+        public string Name { get; set; }
+        public string AuthToken { get; set; }
+        public RelayWebhookMatch Match { get; set; }
+    }
+
+    public class RelayWebhookMatch
+    {
+        public RelayWebhookMatch()
+        {
+            Protocol = "SMTP";
+        }
+
+        public string Protocol { get; set; }
+        public string Domain { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/SparkPost/RelayWebhooks.cs b/src/SparkPost/RelayWebhooks.cs
new file mode 100644
index 00000000..e9471fdb
--- /dev/null
+++ b/src/SparkPost/RelayWebhooks.cs
@@ -0,0 +1,105 @@
+using System.Net;
+using System.Threading.Tasks;
+using SparkPost.RequestSenders;
+
+namespace SparkPost
+{
+    public interface IRelayWebhooks
+    {
+        Task<ListRelayWebhookResponse> List(object query = null);
+        Task<Response> Create(RelayWebhook webhook);
+        Task<RetrieveRelayWebhookResponse> Retrieve(string id);
+        Task<Response> Update(RelayWebhook relayWebhook);
+        Task<bool> Delete(string id);
+    }
+
+    public class RelayWebhooks : IRelayWebhooks
+    {
+        private readonly IClient client;
+        private readonly IDataMapper dataMapper;
+        private readonly IRequestSender requestSender;
+
+        public RelayWebhooks(IClient client, IRequestSender requestSender, IDataMapper dataMapper)
+        {
+            this.client = client;
+            this.requestSender = requestSender;
+            this.dataMapper = dataMapper;
+        }
+
+        public async Task<ListRelayWebhookResponse> List(object query = null)
+        {
+            if (query == null) query = new {};
+            var request = new Request
+            {
+                Url = $"/api/{client.Version}/relay-webhooks",
+                Method = "GET",
+                Data = query
+            };
+
+            var response = await requestSender.Send(request);
+            if (response.StatusCode != HttpStatusCode.OK) throw new ResponseException(response);
+
+            return ListRelayWebhookResponse.CreateFromResponse(response);
+        }
+
+        public async Task<RetrieveRelayWebhookResponse> Retrieve(string id)
+        {
+            var request = new Request
+            {
+                Url = $"/api/{client.Version}/relay-webhooks/{id}",
+                Method = "GET"
+            };
+
+            var response = await requestSender.Send(request);
+            if (response.StatusCode != HttpStatusCode.OK) throw new ResponseException(response);
+
+            return RetrieveRelayWebhookResponse.CreateFromResponse(response);
+        }
+
+        public async Task<Response> Create(RelayWebhook relayWebhook)
+        {
+            var request = new Request
+            {
+                Url = $"api/{client.Version}/relay-webhooks",
+                Method = "POST",
+                Data = dataMapper.ToDictionary(relayWebhook)
+            };
+
+            var response = await requestSender.Send(request);
+            if (response.StatusCode != HttpStatusCode.OK) throw new ResponseException(response);
+
+            var createWebhookResponse = new Response();
+            LeftRight.SetValuesToMatch(createWebhookResponse, response);
+            return createWebhookResponse;
+        }
+
+        public async Task<Response> Update(RelayWebhook relayWebhook)
+        {
+            var request = new Request
+            {
+                Url = $"api/{client.Version}/relay-webhooks/{relayWebhook.Id}",
+                Method = "PUT",
+                Data = dataMapper.ToDictionary(relayWebhook)
+            };
+
+            var response = await requestSender.Send(request);
+            if (response.StatusCode != HttpStatusCode.OK) throw new ResponseException(response);
+
+            var createWebhookResponse = new Response();
+            LeftRight.SetValuesToMatch(createWebhookResponse, response);
+            return createWebhookResponse;
+        }
+
+        public async Task<bool> Delete(string id)
+        {
+            var request = new Request
+            {
+                Url = $"/api/{client.Version}/relay-webhooks/{id}",
+                Method = "DELETE"
+            };
+
+            var response = await requestSender.Send(request);
+            return response.StatusCode == HttpStatusCode.OK;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/SparkPost/RetrieveRelayWebhookResponse.cs b/src/SparkPost/RetrieveRelayWebhookResponse.cs
new file mode 100644
index 00000000..5d182f68
--- /dev/null
+++ b/src/SparkPost/RetrieveRelayWebhookResponse.cs
@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+
+namespace SparkPost
+{
+    public class RetrieveRelayWebhookResponse : Response
+    {
+        public RelayWebhook RelayWebhook { get; set; }
+
+        public static RetrieveRelayWebhookResponse CreateFromResponse(Response response)
+        {
+            var result = new RetrieveRelayWebhookResponse();
+            LeftRight.SetValuesToMatch(result, response);
+
+            var results = JsonConvert.DeserializeObject<dynamic>(response.Content).results;
+
+            result.RelayWebhook = ListRelayWebhookResponse.ConvertToARelayWebhook(results);
+
+            return result;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/SparkPost/SparkPost.csproj b/src/SparkPost/SparkPost.csproj
index 93fc4940..6510c1a7 100644
--- a/src/SparkPost/SparkPost.csproj
+++ b/src/SparkPost/SparkPost.csproj
@@ -59,12 +59,14 @@
     <Compile Include="IMessageEvents.cs" />
     <Compile Include="IValueMapper.cs" />
     <Compile Include="ListMessageEventsResponse.cs" />
+    <Compile Include="ListRelayWebhookResponse.cs" />
     <Compile Include="ListInboundDomainResponse.cs" />
     <Compile Include="MessageEvent.cs" />
     <Compile Include="MessageEvents.cs" />
     <Compile Include="MessageEventsQuery.cs" />
     <Compile Include="MessageEventType.cs" />
     <Compile Include="PageLink.cs" />
+    <Compile Include="RetrieveRelayWebhookResponse.cs" />
     <Compile Include="InboundDomainResponse.cs" />
     <Compile Include="Utilities\SnakeCase.cs" />
     <Compile Include="ValueMappers\AnonymousValueMapper.cs" />
@@ -128,8 +130,10 @@
     <Compile Include="ValueMappers\MapASingleItemUsingToDictionary.cs" />
     <Compile Include="ValueMappers\StringObjectDictionaryValueMapper.cs" />
     <Compile Include="ValueMappers\StringStringDictionaryValueMapper.cs" />
+    <Compile Include="RelayWebhook.cs" />
     <Compile Include="InboundDomain.cs" />
     <Compile Include="Webhook.cs" />
+    <Compile Include="RelayWebhooks.cs" />
     <Compile Include="InboundDomains.cs" />
     <Compile Include="Webhooks.cs" />
   </ItemGroup>