diff --git a/src/Typesafe.Mailgun/MailgunClient.cs b/src/Typesafe.Mailgun/MailgunClient.cs
index 6a25fb9..55fe88a 100644
--- a/src/Typesafe.Mailgun/MailgunClient.cs
+++ b/src/Typesafe.Mailgun/MailgunClient.cs
@@ -1,32 +1,32 @@
-using System;
-using System.Collections.Generic;
-using System.Net.Mail;
-using Typesafe.Mailgun.Routing;
-using Typesafe.Mailgun.Statistics;
-
-namespace Typesafe.Mailgun
-{
-	/// <summary>
-	/// Provides access to the Mailgun REST API.
-	/// </summary>
-	public class MailgunClient : IMailgunAccountInfo, IMailgunClient
-	{
-		/// <summary>
-		/// Initializes a new client for the specified domain and api key.
-		/// </summary>
-		public MailgunClient(string domain, string apiKey, int version)
-		{
-			DomainBaseUrl = new Uri(string.Format("https://api.mailgun.net/v{0}/", version) + domain + "/");
-			ApiKey = apiKey;
-		}
-
-		public Uri DomainBaseUrl { get; private set; }
-
-		public string ApiKey { get; private set; }
-
-		public SendMailCommandResult SendMail(MailMessage mailMessage)
-		{
-			return new SendMailCommand(this, mailMessage).Invoke();
+using System;
+using System.Collections.Generic;
+using System.Net.Mail;
+using Typesafe.Mailgun.Routing;
+using Typesafe.Mailgun.Statistics;
+
+namespace Typesafe.Mailgun
+{
+	/// <summary>
+	/// Provides access to the Mailgun REST API.
+	/// </summary>
+	public class MailgunClient : IMailgunAccountInfo, IMailgunClient
+	{
+		/// <summary>
+		/// Initializes a new client for the specified domain and api key.
+		/// </summary>
+		public MailgunClient(string domain, string apiKey, int version, string region = "us")
+		{            
+			DomainBaseUrl = new Uri($"https://api.{(!region.Equals("us") ? $"{region}." : "")}mailgun.net/v{version}/{domain}/");
+            ApiKey = apiKey;
+		}
+
+		public Uri DomainBaseUrl { get; private set; }
+
+		public string ApiKey { get; private set; }
+
+		public SendMailCommandResult SendMail(MailMessage mailMessage)
+		{
+			return new SendMailCommand(this, mailMessage).Invoke();
 		}
 
 		public SendMailCommandResult SendBatchMail(MailMessage mailMessage)
@@ -37,26 +37,26 @@ public SendMailCommandResult SendBatchMail(MailMessage mailMessage)
 		public SendMailCommandResult SendBatchMail(MailMessage mailMessage, IDictionary<string, IDictionary<string, object>> recipientVariables)
 		{
 			return new SendMailCommand(this, mailMessage, recipientVariables).Invoke();
-		}
-
-		public IEnumerable<Route> GetRoutes(int skip, int take, out int count)
-		{
-			return new MailgunRouteQuery(this).Execute(skip, take, out count);
-		}
-
-		public Route CreateRoute(int priority, string description, RouteFilter expression, params RouteAction[] actions)
-		{
-			return new CreateRouteCommand(this, priority, description, expression, actions).Invoke().Route;
-		}
-
-		public CommandResult DeleteRoute(string routeId)
-		{
-			return new DeleteCommand(this, "../routes/" + routeId).Invoke();
-		}
-
-		public IEnumerable<MailgunStatEntry> GetStats(int skip, int take, MailgunEventTypes eventTypes, out int count)
-		{
-			return new MailgunStatsQuery(this, eventTypes).Execute(skip, take, out count);
-		}
-	}
-}
+		}
+
+		public IEnumerable<Route> GetRoutes(int skip, int take, out int count)
+		{
+			return new MailgunRouteQuery(this).Execute(skip, take, out count);
+		}
+
+		public Route CreateRoute(int priority, string description, RouteFilter expression, params RouteAction[] actions)
+		{
+			return new CreateRouteCommand(this, priority, description, expression, actions).Invoke().Route;
+		}
+
+		public CommandResult DeleteRoute(string routeId)
+		{
+			return new DeleteCommand(this, "../routes/" + routeId).Invoke();
+		}
+
+		public IEnumerable<MailgunStatEntry> GetStats(int skip, int take, MailgunEventTypes eventTypes, out int count)
+		{
+			return new MailgunStatsQuery(this, eventTypes).Execute(skip, take, out count);
+		}
+	}
+}