About the app
MockSMTP is a native Mac application that embeds its own SMTP server. It also features an e-mail client browser, enabling instant viewing of both raw content and HTML rendering, so you can see how your mail looks when delivered.
Configuration couldn't be simpler: just run the application and everything's set up. You don't even need an internet connection for it to work!
Up and coming
This is our first release. You can already download a 30-day free trial and now you can buy it €19. All 1.x updates will be free. Of course, we are waiting for your feedback to make it even better!
Use the feedback form to report ideas/problems.

HTML emails are a great way to keep clients posted on the latest updates related to your business or product, but they’re a bit tricky. CSS support in email clients is inconsistent. As a result, we must resort to ancient techniques, such as using tables, and inline CSS. Today, I’m going to walk you through the process of creating simple HTML emails.
Intro: HTML Email
As a freelance web developer, coding HTML emails are one of the more challenging tasks that I have to deal with. Fortunately, when one of my first clients asked me to design and code his email newsletter, he was patient enough to let me go through the long and frustrating process of figuring it all out. You might not be so lucky, so prepare yourself with this tutorial.

For too long HTML email has been the ugly step-child of the web. It's time for a change, so we teamed up with some seriously talented designers to bring their skills to the world of HTML email.

Every template has been thoroughly tested in more than 20 of the most popular email clients like Outlook 2010, Gmail, Lotus Notes, Apple Mail, the iPhone, and more. They're ready to roll and are completely free.

Usage

Drop ActionMailer.php in your libraries/ directory. Create a new mailer and extend ActionMailer. See ApplicationMailer.php for an example mailer.

To send an email, call ApplicationMailer->deliver_account_notification()
Defining Messages

Each message in a mailer should be it's own method. This method should define $this->to, $this->from, $this->subject, and $this->message. If you need attachments, assign them as an array to $this->attachments.

Messages are delivered by calling ApplicationMailer->deliver_MESSAGE_METHOD_NAME() (replace MESSAGE_METHOD_NAME - See Sending Messages below).
Sending Messages

To deliver a message, call the message method from your Mailer with a prefix of deliver_.

For example: assume you've loaded your mailer to $this->mailer and want to send the message defined in ApplicationMailer->my_message(). From your application, simply call $this->mailer->deliver_my_message().