Get in touch
Lob Direct Mail for OpenCart — postcards and letters to your US buyers
Lob panel. Lob settings. Piece log.
OpenCart

Lob Direct Mail for OpenCart — postcards and letters to your US buyers

Printed postcards to US buyers through Lob.

Pro · lifetime licence Staging copies are included. The more sites, the cheaper each one
Compatibility
OpenCart 4.0.2+ / 4.1 and 3.x · PHP 8.0+ · English, Spanish
Version
v1.0.0 (OpenCart 4)
v1.0.0 (OpenCart 3.x)
Licence
a site + a staging copy, lifetime
Trial
7 days, no card, one per site
Updated
November 2026
Or all 394 Pro modules with All Access — 4 990 ₴ / year ≈ €98

What Free has,
and what Pro adds

The free version works with no time limit. Pro adds the rest of the features in the table.

Feature Free Pro
Postcard from the order page ✔ ✔
US address check ✔ ✔
Test mode with no printing ✔ ✔
Idempotency key ✔ ✔
Automation on a status — ✔
Letters and CSV — ✔

What it looks like

Lob panel.
The panel on the order page.
Lob settings.
Settings.
Piece log.
The log.

Key points

What the free version does

On the order page the buttons Send a postcard and Check the address. The postcard is built from your HTML layouts; in test mode nothing is printed.

What Pro adds

An automatic postcard on an order status with a minimum total and a daily cap, letters, an automatic address check of new orders and a CSV export of the log.

How much it costs

The base version is free. Pro costs 990 UAH, a perpetual licence. One payment, no yearly fees.

The trial starts when you ask

A fresh install is the free version, nothing switches on by itself. The “Try Pro for 7 days” button → e-mail → the key right in the window and by e-mail.

One key — a site and a staging copy

Moving the site? Unlink the licence on the old domain and activate it on the new one yourself. A staging copy (staging., dev.) works with the same key and does not take a site slot. For studios — keys for 5 or 25 sites, or unlimited.

Technical requirements

  • OpenCart 4.0.2 or newer (4.1.0.3 and 4.0.2.3 tested).
  • PHP 8.0+, the cURL extension.
  • A Lob account and key (the test key is free).

Version history

v1.0.0 Current November 2026

Postcards, address check, log.

Frequently bought with Lob Direct Mail

All Access Need more? All modules (394) under one licence, new ones are added automatically. 4 990 ₴≈ €98 Learn more →

Full module description

Lob Direct Mail sends your US buyers printed postcards and letters through Lob: from the order page with one button, and in Pro automatically on a status. An address check is included. Lob’s test mode prints nothing and costs nothing. OpenCart is not on Lob’s integrations page.

On OpenCart 3 we did not walk a real checkout: orders were created in the database and statuses were changed in the admin.

What the free version does

On the order page the buttons Send a postcard and Check the address. The postcard is built from your HTML layouts; in test mode nothing is printed. Lob errors (address, limit, outage) are shown in plain words, and a retry of a failed piece creates a new one with a new idempotency key. A log is included.

What Pro adds

An automatic postcard on an order status with a minimum total and a daily cap, letters, an automatic address check of new orders and a CSV export of the log.

How it works, step by step

  1. Create a free Lob account and take a test key.
  2. Enter the key, the return address and the layouts.
  3. Send a test postcard from the order page.
  4. For real mail enter the live key.

Under the hood

  • Every piece has an idempotency key: a lost answer does not make two postcards.
  • The keys are encrypted and never put in a page.
  • Languages: English, Spanish.

How to install

  1. Extensions → Installer: upload the zip.
  2. Extensions → Modules: install and open the module.
  3. Module settings: the Lob keys (test and live), the return address and the postcard layouts.
  4. Try one test order.

OpenCart 4.0.2 or newer is required. Do not rename the archive.

Questions
about the module

Didn't find the answer? Message us on Telegram and we'll reply within a business day.

@catcode_support Setup, compatibility, activation
Is this an official Lob module?

No. We made the module; Lob is the name of the service.

Does it work on OpenCart 3?

There is a separate build; settings, a postcard and automation on a status were checked on it, but we did not walk a real checkout there.

What happens after the trial?

Pro switches off, the free part keeps working.

Not quite what you are looking for?

We build custom modules for WordPress, WooCommerce, OpenCart and Shopify. Tell us about the task and we'll prepare an estimate.

Order a custom module