How to Send a Welcome Postcard After Shopify App Install
by
Ryan ODonnell
Last updated:
July 29, 2025
Getting a merchant to install your Shopify app is a win, but keeping them around is the real challenge.
Most new users decide within the first few days whether they’ll stick with your app. A welcome postcard is a surprising, personal touch that can help tip the scales. It’s not just a feel-good gesture—it’s a way to:
Reduce early churn by making your app feel human and memorable
Reinforce your brand in a crowded marketplace
Start customer relationships on the right foot, before support tickets ever come in
In this guide, you’ll learn how to automate a real, physical postcard to be sent after each new installation of your app—no manual work, no fulfillment headaches. Just a smart, scalable way to make your app stand out and your users feel seen.
TL;DR: Want to skip the setup? Use our template to send welcome postcards for new app signups:
MESA Template ID
send-postcard-after-shopify-app-installation
Topics:
Step-by-step guide: How to send a welcome postcard after app install
Time needed: 5 minutes
MESA lets you easily set up a workflow that sends personalized welcome postcards to new app users. Here’s how:
Set up the Mantle trigger
Configure Mantle’s “New User Registered” trigger to detect when a new user installs your app. Select the dropdown menu to retrieve your available app IDs. This trigger will capture user data, such as their name and mailing address, to personalize the postcard.
Get customer details
Next, we need to get the customer details based on the ID that was given when it was created. This lets us acquire customer details such as full name and address so we may pass them along to the service sending the postcard, in this example, Thanks.io.
Configure the postcard template
Design your welcome postcard template using MESA’s integration with popular print-on-demand services like Thanks.io. Customize the postcard with your app’s branding, a warm welcome message, and any special offers or tips for getting started.
Be sure to populate the postcard template with the user’s name and mailing address captured by the Retrieve Customer step. This ensures each postcard is personalized for the individual user.
Turn workflow “On”
Once you’ve configured the trigger and postcard template, activate your workflow in MESA. From this point forward, every new user who installs your app will automatically receive a personalized welcome postcard.
Save yourself the setup. Use this template instead:
MESA Template ID
send-postcard-after-shopify-app-installation
Why send a welcome postcard after app install?
Stand out from the crowd: A real postcard lands on their doorstep—not just their inbox—creating a memorable experience digital messages can’t match.
Keep users coming back: A simple show of appreciation can nudge new users to stick around and discover what your app offers.
Create a lasting impression: A physical postcard feels thoughtful. People often keep them on their desk or fridge, reminding them about your app daily.
Reach beyond the screen: Direct mail allows your brand to connect in a way most apps don’t attempt. When people see your postcard in their mailbox, it can spark curiosity to explore your app further.
Personalize the experience: By tailoring each postcard with the user’s name and a warm message, you show that you notice and value every new signup.
Tips on creating effective welcome postcards
Keep the design simple and visually appealing
Skip the clutter. A clean design with your logo, brand colors, and an inviting image works best. Think of what would catch your eye in a pile of daily mail.
Write a clear, concise message
Thank your new user for joining. Point out one or two features that can help them right away. For example, imagine a postcard that says, “Thanks for installing our app! Check out the dashboard to unlock your first bonus.”
Include a strong call-to-action
Tell users what to do next. Maybe you want them to try a specific feature or use a discount code. Make your call-to-action easy to spot and even easier to follow.
Frequently asked questions
How long does it take for users to receive the welcome postcard after install?
Most postcards arrive within a week, but this can vary by location and postal service.
Can I track the effectiveness of my welcome postcard campaign?
Yes. You can add unique codes or URLs to your postcard and watch for redemptions or visits that tie back to your campaign.
What if a user uninstalls the app before receiving the postcard?
To avoid sending postcards to users who uninstall early, you can add a delay before triggering the postcard. Then, include a filter to check if the app is still installed. That way, only merchants who stick around past the trial period will receive a postcard.
How much does it cost to send welcome postcards to new app users?
Costs depend on your print provider and the number of postcards you send. Some services offer volume discounts.
Can I customize the postcard design for different user segments or app versions?
Absolutely. MESA makes it easy to personalize postcards for different groups, so each user receives a message that fits their experience.
What you should do now
Whenever you’re ready…here are 4 ways MESA can help you get more done:
Sign up for MESA. The best way to get started is sign up for MESA today. Every plan includes the first 7-days free so you can be assured your workflow is running properly.
Browse pre-made templates. Our customizable workflow templates are a great way to get started more quickly.
Talk to our automation experts. If you need help personalizing any workflow template, guidance how to make any automation or, simply want us to make your workflow, we can help.
If you know another merchant who’d enjoy reading this page, share it with them via LinkedIn, YouTube, Twitter, or Facebook.
Skip the setup. Get the template.
Use this template to send welcome postcards for new app signups.
