Customer Checker
A free extension to identify and fix customer information errors. Easily edit customer details directly from the extension.

Features

Names with spaces: Find customers with names containing unnecessary spaces. Quickly review and correct their details to maintain data consistency.
Invalid email: Identify customers with invalid email addresses. Ensure accurate and functional email records by locating and fixing these errors.
Duplicate email: Locate customers with duplicate email addresses. Maintain unique entries by resolving duplicates efficiently through the extension.
Duplicate Name: Locate customers with duplicate names, letting you easily find multiple accounts for the same customer, helping manage your customer accounts.
Duplicate Telephone number: Locate customers with duplicate telephone numbers. Maintain unique entries by resolving duplicates efficiently through the extension.

Installation and Update:
This extension supports OpenCart version 3.x, 4.x, cloud, events system, and the Journal Theme. No files are stored outside the extension, no files are overwritten and it does not use OCMODE/vQmode.

Each download file is the extension file to install. Download the ZIP file for the OpenCart version you require, use the built in installer, use upload button and choose that file.

If you have the free NaNet Extension Helper (v1.7 or later) installed, you can use export option (top right menu) within your extension before uninstalling. When you reinstall, the settings can be restored by using import option. This extension will also add an OpenCart header menu for easy access to all NaNet extensions.

Please note: It's always a good practice to backup your OpenCart installation before installing any extensions or making significant changes.

Current version
2025-10-01 (1.1) Meeting cloud requirements. Added top menu option. Added checking for duplicate names and telephone numbers.