For a long time, I’ve been looking for a better email newsletter and event invitation solution for website managers than either Mailchimp or MailPoet. By piggybacking on the Postmark service for high-volume email, I think I’ve found it — or, in part, created it by building on WordPress standards.

Register for the beta if you would like to try RSVPMaker integration with the Postmark service, which starts at $10 for 10,000 email sends per month. That would likely represent a cost savings vs. Mailchimp or MailPoet for most of you, although it depends on the size of your list and how often you send to it. Aside from the price, you get the simplicity of authoring your email newsletters in the same basic editor you use for blog posts, web pages, and RSVPMaker events.

Postmark also helps you deliver transactional messages such as RSVP confirmations and password resets more reliably. What it doesn’t offer is a visual message authoring environment — which is the gap I’m trying to fill with RSVPMaker and WordPress.

The RSVP Mailer utility included with RSVPMaker has been in the software for a long time but has become more powerful with the addition of block-based email templates, like the one used to format this message.

You can read more about the available formatting options in this blog post.

I plan to offer Postmark integration as a paid add-on to RSVPMaker, at a reasonable price, still TBD. As a beta tester, you can get it for free.

Although RSVPMaker provides some tools for managing email using the native email sending capabilities of WordPress, you’re much more likely to run afoul of issues with spam blacklists and your web host’s email sending policies if push that too far. For years, I’ve recommended RSVPMaker’s integration with Mailchimp as a solution to that issue, but this new Postmark integration is a further improvement.

A Better Mailer for Me (and Maybe You, Too)

With the RSVPMaker Mailer, you compose newsletters and event invitations in the block editor, then preview and send them in a special front end template.

Preparing to send the message you’re reading now.

Having invested time in learning to use the WordPress editor efficiently, I would rather compose content for emails, blog posts, events, and pages all within the same editor. RSVP Mailer also allows me to incorporate event listings, latest post listings, individual blog posts, and other content that are all hosted on the same platform.

Here’s why I’m ready to move on from two other services I’ve used.

  • MailPoet, which was acquired by Automattic, also runs within the WordPress dashboard and lets you incorporate some content such as blog posts and WooCommerce content. Ironically, it does not use the standard block editor but an entirely different WYSIWYG editor. They also haven’t gotten around to making it work properly with a multisite setup, which is important for some of my applications.
  • Mailchimp is a great product, but I’ve never really made full use of it except through the API. RSVPMaker has offered API integration with Mailchimp for years, and I have often composed messages on my website and sent them through Mailchimp. In other words, I take advantage of Mailchimp’s server infrastructure but not the design tools that are its main selling point.

Both services also offer reporting on how many recipients opened your messages and clicked on links within them — services I can replicate through integration with Postmark.

How it Works

To use the Postmark service with RSVPMaker, you’ll need to sign up for an account at You can get a free account for testing. You have the option of creating multiple Postmark “servers” (really just logical groupings of related services), where each server includes multiple message streams – Broadcast, Outbound (transactional), and Inbound.

You can define multiple servers, for example to correspond with different websites. But for starters, you can stick to one. You’ll also need to follow their process for validating your right to send email on behalf of your web domain, which requires some futzing with DNS settings — but the instructions are very clear.

You will copy and paste an API key for the Postmark server into the RSVPMaker Mailer for Postmark options screen (part of the beta test plugin). To enable the Inbound stream, which is optional, you enter an webhook url from the RSVPMaker options screen into the Inbound stream settings for Postmark.

The Inbound stream allows you to have RSVPMaker manage email forwarding and email lists. That’s something I’ve used with community website applications, but if it’s not relevant to you, you can skip it.

Once all this is configured, Postmark will be ready to send messages on your behalf at the rate of 500 at a time. When sending to more than 500 recipients, RSVPMaker breaks your list up into batches of 500 each and keeps sending until all messages have been sent.

In other words, it might take four to five minutes to send to a 2,000 member list.

Why I need your help

The Postmark integration is working well in my testing and in some preliminary production deployments, but I’m very much still fine tuning it. I want you to let me know how you find the authoring and design experience, as well as how well the user interface for sending messages works for you. I’m also looking for talented designers to show me what they can do with RSVPMaker’s block editor system for email templates.

The screen for adding emails or importing lists from sources such as Mailchimp has been redesigned but still needs work. Access to reports on link tracking are on my todo list — in fact, I’ll probably use tracking of links on this post as a test.

Register for the beta if you would like to participate, and I’ll send you a zip file with the code needed to add the Postmark integration.


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