Notify Waitlisted Customers When a Product Becomes Available

When a customer submits the waitlist form, MESA immediately captures their email address and kicks off the workflow. The form displays a "Join the waitlist" header with an email input field by default — you can customize the header text, label, and placeholder to match your brand voice. The form generates a unique embed URL you can add directly to product pages so customers can sign up at exactly the right moment.

When a form submission comes in, this step pauses the workflow and queues an approval request in your MESA dashboard. You review the submission and choose to approve — continuing to the notification email — or reject, which ends the workflow for that customer without sending anything. You can configure the step to route approval requests to specific email addresses so your team can act from their inbox. Approving in batches when inventory actually arrives gives you full control over when and how many customers get notified at once.

MESA fetches your Shopify store's domain, which is used to construct the direct product link included in the notification email. This step runs automatically and requires no configuration.

MESA retrieves the specific product you've configured for this waitlist, pulling its current title and URL handle to use in the notification email. You need to enter the product ID once during setup — open the product in your Shopify admin and copy the number from the end of the URL (for example, in /admin/products/1234567890, the ID is 1234567890). The product data retrieved here ensures the email reflects current information even if the product name or URL has changed since the customer joined the waitlist.

MESA sends a back-in-stock notification to the customer's email address captured from the form. The default subject line includes the product name, and the message body includes a direct link to the product page so customers can purchase right away. Open the Send Email step to customize the subject and message — you can add urgency messaging, a limited-time offer, or your brand's voice. Because the email only sends after a manual approval, customers receive it at a time you control.