diff --git a/GreenArrow.Engine/DKIMKeysApi/DKIMKeysApiClient.cs b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysApiClient.cs
new file mode 100644
index 0000000..a2e3eed
--- /dev/null
+++ b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysApiClient.cs
@@ -0,0 +1,79 @@
+using GreenArrow.Engine.Extensions;
+using GreenArrow.Engine.RestApi;
+using Microsoft.Extensions.Options;
+using System.Net;
+using System.Net.Http.Headers;
+
+namespace GreenArrow.Engine.DKIMKeysApi
+{
+    /// <summary>
+    /// DKIM Keys API client implementation
+    /// </summary>
+    public class DKIMKeysApiClient : IDKIMKeysApi
+    {
+        private readonly GreenArrowEngineSettings _settings;
+        private readonly IHttpClientFactory _httpFactory;
+
+        private readonly string _endpoint;
+
+        /// <summary>
+        /// Initializes a new instance of Green Arrow DKIM Keys API Client
+        /// </summary>
+        /// <param name="options">Green Arrow settings with API Url and Authorization Token</param>
+        /// <param name="httpFactory">HttpClienFactory for create HttpClient objects</param>
+        public DKIMKeysApiClient(
+            IOptions<GreenArrowEngineSettings> options,
+            IHttpClientFactory httpFactory)
+        {
+            _settings = options.Value;
+            _httpFactory = httpFactory;
+            _endpoint = GetEndPoint();
+        }
+
+        private HttpClient CreateHttpClient()
+        {
+            var client = _httpFactory.CreateClient();
+            return client;
+        }
+
+        private string GetEndPoint()
+        {
+            var baseUri = new Uri(_settings.ServerUri);
+            var endpointUri = new Uri(baseUri, _settings.DKIMKeysAPIEndpoint);
+            return endpointUri.ToString();
+        }
+
+        /// <inheritdoc />
+        public async Task<IRestApiResponse<DKIMKeysResponse>> PostAsync(DKIMKeysRequest request, CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                var jsonContent = request.ToJson();
+
+                var client = CreateHttpClient();
+
+                var authenticationString = $"{request.Username}:{request.Password}";
+                var base64EncodedAuthenticationString = Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(authenticationString));
+
+                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", base64EncodedAuthenticationString);
+
+                var httpContent = new StringContent(jsonContent, encoding: default, mediaType: "application/json");
+                var httpResponse = await client.PostAsync(_endpoint, httpContent, cancellationToken);
+
+                if (httpResponse.StatusCode == HttpStatusCode.OK)
+                {
+                    var result = await httpResponse.Content.ReadAsStringAsync(cancellationToken);
+                    var content = result.ToObject<DKIMKeysResponse>();
+                    return new RestApiResponse<DKIMKeysResponse>(httpResponse.StatusCode, content);
+                }
+
+                return new RestApiResponse<DKIMKeysResponse>(httpResponse.StatusCode);
+
+            }
+            catch (Exception exception)
+            {
+                throw new RestApiException("Unexpected exception", exception);
+            }
+        }
+    }
+}
diff --git a/GreenArrow.Engine/DKIMKeysApi/DKIMKeysRequest.cs b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysRequest.cs
new file mode 100644
index 0000000..d910fcb
--- /dev/null
+++ b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysRequest.cs
@@ -0,0 +1,29 @@
+using GreenArrow.Engine.Model;
+using GreenArrow.Engine.RestApi;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+
+namespace GreenArrow.Engine.DKIMKeysApi
+{
+    /// <summary>
+    /// Create a DKIM Key Request
+    /// </summary>
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy), ItemNullValueHandling = NullValueHandling.Ignore)]
+    public class DKIMKeysRequest : IRestApiModel
+    {
+        /// <summary>
+        /// Username that is authorized to log in to GreenArrow Engine’s web interface.
+        /// </summary>
+        public string Username { get; set; }
+
+        /// <summary>
+        /// Password that is authorized to log in to GreenArrow Engine’s web interface.
+        /// </summary>
+        public string Password { get; set; }
+
+        /// <summary>
+        /// To create the private key
+        /// </summary>
+        public DkimKey DkimKey { get; set; }
+    }
+}
diff --git a/GreenArrow.Engine/DKIMKeysApi/DKIMKeysResponse.cs b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysResponse.cs
new file mode 100644
index 0000000..b3ba93f
--- /dev/null
+++ b/GreenArrow.Engine/DKIMKeysApi/DKIMKeysResponse.cs
@@ -0,0 +1,42 @@
+using GreenArrow.Engine.Model;
+using GreenArrow.Engine.RestApi;
+
+namespace GreenArrow.Engine.DKIMKeysApi
+{
+    /// <summary>
+    /// GreenArrow Response is the full DKIM Key record data
+    /// </summary>
+    public class DKIMKeysResponse : IRestApiModel
+    {
+        /// <summary>
+        /// When request was succesful created
+        /// </summary>
+        public bool Success { get; init; }
+
+        /// <summary>
+        /// Full DKIM Key record data
+        /// </summary>
+        public DKIMKeysResponseData Data { get; init; }
+
+        /// <summary>
+        /// Error code when request was not accepted
+        /// </summary>
+        public string ErrorCode { get; init; }
+
+        /// <summary>
+        /// Error message when request was not accepted
+        /// </summary>
+        public string ErrorMessages { get; init; }
+    }
+
+    /// <summary>
+    /// Full DKIM Key record data
+    /// </summary>
+    public class DKIMKeysResponseData
+    {
+        /// <summary>
+        /// Full DKIM Key record data
+        /// </summary>
+        public DkimKey DkimKey { get; init; }
+    }
+}
diff --git a/GreenArrow.Engine/DKIMKeysApi/IDKIMKeysApi.cs b/GreenArrow.Engine/DKIMKeysApi/IDKIMKeysApi.cs
new file mode 100644
index 0000000..e7846de
--- /dev/null
+++ b/GreenArrow.Engine/DKIMKeysApi/IDKIMKeysApi.cs
@@ -0,0 +1,19 @@
+using GreenArrow.Engine.RestApi;
+
+namespace GreenArrow.Engine.DKIMKeysApi
+{
+    /// <summary>
+    /// Represent the actions available in Green Arrow Engine DKIM Keys API
+    /// </summary>
+    /// <remarks><see href="https://www.greenarrowemail.com/docs/greenarrow-engine/API-V3/Engine/DKIM-Keys"/></remarks>
+    public interface IDKIMKeysApi
+    {
+        /// <summary>
+        /// Create a DKIM Key
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken">The cancellation toekn</param>
+        /// <returns>A generic rest api response with the deserialized DKIM Keys API response when success</returns>
+        Task<IRestApiResponse<DKIMKeysResponse>> PostAsync(DKIMKeysRequest request, CancellationToken cancellationToken = default);
+    }
+}
diff --git a/GreenArrow.Engine/GreenArrowEngineSettings.cs b/GreenArrow.Engine/GreenArrowEngineSettings.cs
index 48d477f..0237531 100644
--- a/GreenArrow.Engine/GreenArrowEngineSettings.cs
+++ b/GreenArrow.Engine/GreenArrowEngineSettings.cs
@@ -14,5 +14,10 @@ public class GreenArrowEngineSettings
         /// The HTTP Submission API Endpoint
         /// </summary>
         public string HTTPSubmissionAPIEndpoint { get; set; } = "/api/v1/send.json";
+
+        /// <summary>
+        /// The DKIM API Endpoint
+        /// </summary>
+        public string DKIMKeysAPIEndpoint { get; set; } = "/api/v3/eng/dkim_keys";
     }
 }
diff --git a/GreenArrow.Engine/Model/DkimKey.cs b/GreenArrow.Engine/Model/DkimKey.cs
new file mode 100644
index 0000000..162dedd
--- /dev/null
+++ b/GreenArrow.Engine/Model/DkimKey.cs
@@ -0,0 +1,53 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+
+namespace GreenArrow.Engine.Model
+{
+    /// <summary>
+    /// Dkim Key Data
+    /// </summary>
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy), ItemNullValueHandling = NullValueHandling.Ignore)]
+    public class DkimKey
+    {
+        /// <summary>
+        /// The domain name associated with this DKIM Key.
+        /// </summary>
+        public string Domain { get; init; }
+
+        /// <summary>
+        /// The selector used to identify this DKIM Key.
+        /// </summary>
+        public string Selector { get; init; }
+
+        /// <summary>
+        /// Whether this is the default DKIM key for this domain.
+        /// </summary>
+        public string DefaultForDomain { get; init; }
+
+        /// <summary>
+        /// The key data
+        /// </summary>
+        public Key Key { get; init; }
+    }
+
+    /// <summary>
+    /// The key data
+    /// </summary>
+    public class Key
+    {
+        /// <summary>
+        /// The number of bits used to generate this key.
+        /// </summary>
+        public int Bits { get; init; }
+
+        /// <summary>
+        /// The PEM-encoded private key.
+        /// </summary>
+        public string Private { get; init; }
+
+        /// <summary>
+        /// The public key, derived from the private key. This is PEM-encoded with the header line, footer line, and line-breaks stripped.
+        /// </summary>
+        public string Public { get; init; }
+    }
+}