diff --git a/maildev/maildev.d.ts b/maildev/maildev.d.ts
new file mode 100644
index 000000000..fadd1aceb
--- /dev/null
+++ b/maildev/maildev.d.ts
@@ -0,0 +1,109 @@
+// Type definitions for maildev 0.11.0
+// Project: https://github.com/djfarrelly/maildev
+// Definitions by: Cyril Schumacher <https://github.com/cyrilschumacher/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts"/>
+
+import fs = require("fs");
+
+/**
+ * Interface for {@link MailDev} options.
+ */
+interface MailDevOptions {
+  /**
+   * SMTP host for outgoing emails
+   *
+   * @type {string}
+   */
+  outgoingHost: string;
+
+  /**
+   * SMTP password for outgoing emails
+   *
+   * @type {string}
+   */
+  outgoingPass: string;
+
+  /**
+   * SMTP port for outgoing emails.
+   *
+   * @type {number}
+   */
+  outgoingPort: number;
+
+  /**
+   * SMTP user for outgoing emails
+   *
+   * @type {string}
+   */
+  outgoingUser: string;
+
+  /**
+   * SMTP port to catch emails.
+   *
+   * @type {number}
+   */
+  smtp: number;
+}
+
+/**
+ * Interface for {@link MailDev}.
+ */
+interface MailDev {
+  /**
+   * Constructor.
+   *
+   * @public
+   * @param options The options.
+   */
+  new(options: MailDevOptions): MailDev;
+
+  /**
+   * Stops the SMTP server.
+   *
+   * @public
+   * @param callback The error callback.
+   */
+  end(callback?: (error: Error) => void): void;
+
+  /**
+   * Accepts e-mail identifier, returns email object.
+   *
+   * @public
+   * @param id The e-mail identifier.
+   */
+  getEmail(id: string, callback?: (error: Error) => void): void;
+
+  /**
+   * Returns a readable stream of the raw e-mail.
+   *
+   * @public
+   * @param id The e-mail identifier.
+   */
+  getRawEmail(id: string, callback?: (error: Error, readStream: fs.ReadStream) => void): void;
+
+  /**
+   * Returns array of all e-mail.
+   
+   * @public
+   */
+  getAllEmail(): void;
+
+  /**
+   * Starts the SMTP server.
+   *
+   * @public
+   * @param callback The error callback.
+   */
+  listen(callback?: (error: Error) => void): void;
+
+  /**
+   * Event called when a new e-mail is received. Callback receives single mail object.
+   *
+   * @public
+   * @param eventName The event name.
+   * @param callback  The callback for obtains the received email.
+   */
+  on(eventName: string, callback: (email: string) => void): void;
+}