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To make a MailWizz license key work, you must enter a valid Item Purchase Code during the initial installation or within the application settings. The software links your license to your server's IP address to ensure each installation has its own dedicated license. 1. Locate Your License Key
Your MailWizz license key is the Item Purchase Code provided by the Envato Marketplace where you bought the software: Log in to your Envato/Codecanyon account. Navigate to the Downloads section.
Find MailWizz and select "License certificate & purchase code" (available as PDF or text). Copy the code from the field labeled "Item Purchase Code." 2. Activate During Installation When installing MailWizz for the first time on your server: Run the installation script by visiting ://yourdomain.com. Follow the prompts until you reach the License step. Paste your Item Purchase Code into the license key field.
Complete the setup to associate the key with your server's IP. 3. Managing or Updating an Existing License
If you already have MailWizz installed and need to update your license details:
Update Info: Log in to your MailWizz dashboard as an admin and navigate to Backend > Settings > License Info.
Verify Status: You can check the current status and details of your key on the MailWizz License Info page. 4. Troubleshooting Common Issues
"License already registered": This occurs if you try to use the key on a different server or a new installation while it's still linked to the old one. You must use the official Reset License tool before it will work on a new environment.
Multiple Installs: MailWizz requires a separate license for every single installation. You cannot use one key for multiple live instances.
Firewall Blocks: Ensure your server can communicate with mailwizz.com on port 443 (SSL) so the application can perform mandatory periodic license validation checks.
Are you experiencing a specific error message (like "Unauthorized Access") or are you moving your installation to a new server?
This license is already registered to another MailWizz instance
The Frustrating Journey
It was a typical Monday morning for John, the owner of a small digital marketing agency. He was excited to start a new campaign for one of his clients, but his enthusiasm was short-lived. He had decided to use Mailwizz, a popular email marketing automation tool, to manage his client's email list and send out newsletters. However, as he was setting up the campaign, he encountered a frustrating issue - his Mailwizz license key wasn't working.
John had purchased the license key a few days ago, and he had been looking forward to using it. But now, as he entered the key into the Mailwizz dashboard, it kept showing an error message: "Invalid license key." John tried re-entering the key multiple times, but nothing seemed to work. He began to feel a sense of panic creeping in, as he had a deadline to meet and his client's campaign was counting on it.
The Support Team
Feeling helpless, John decided to reach out to Mailwizz's support team. He sent them an email, explaining his issue and providing all the necessary details, including his license key and the error message he was seeing. He anxiously waited for a response, hoping that they would be able to help him resolve the issue quickly.
To his relief, the support team responded within an hour. They asked him to provide some additional information, which John promptly sent over. The support team then informed him that they would look into the issue and get back to him soon.
The Solution
A few hours later, the support team got back to John with a solution. It turned out that there was a small issue with the license key, which had been generated incorrectly. The support team provided John with a new, working license key, and asked him to try it out.
John was thrilled to receive the new license key. He entered it into the Mailwizz dashboard, and to his delight, it worked perfectly. He was now able to access all the features of Mailwizz, and his campaign was back on track.
The Successful Campaign
With the Mailwizz license key issue resolved, John was able to complete his client's campaign without any further hiccups. The campaign was a huge success, with a high open rate and a significant increase in conversions. John's client was thrilled with the results, and John was grateful to have overcome the technical issue that had threatened to derail the campaign. mailwizz license key work
From that day on, John made sure to double-check his license keys and to reach out to support teams promptly if he encountered any issues. He also appreciated the efficiency and helpfulness of Mailwizz's support team, who had helped him resolve the issue quickly and effectively. The working Mailwizz license key had saved the day, and John was now a happy and satisfied customer.
license key is a unique identifier used to activate and validate your self-hosted email marketing platform. It is bound to the specific server IP address where you first install the application Where to Find Your Key If you purchased MailWizz through the Envato Marketplace , your license key is referred to as the Item Purchase Code Log into your Envato account Navigate to the
next to MailWizz and select "License certificate & purchase code." How Activation Works
During the initial installation process (usually via your domain's URL), you will be prompted to enter this valid license key. Time4Servers IP Binding:
Upon entry, the system associates the key with your server's current IP address. Verification:
performs periodic checks to ensure the license remains valid
. If the server environment changes without a license update, the app may go offline with a "License error!" message. One Key, One Install: Both Regular and Extended licenses allow only installation. Multiple servers require separate licenses. Common Issues and Solutions
This license is already registered to another MailWizz instance
To make your MailWizz license key work, you must ensure it is correctly reset if you are moving to a new server or re-installing. MailWizz binds your license key to the specific IP address and hosting environment of your first installation. How to Fix License Issues
If you see a "License Error" or "Already Registered" message, follow these steps:
Reset the License: Visit the Official MailWizz Reset Page and enter your key to decouple it from your old server.
Update Settings: Log in to your MailWizz Backend > Settings > License Info.
Re-save Information: Enter your license key again and click Save. This forces the application to re-validate with the central servers.
Match License Type: Ensure you aren't using a Regular License for a SaaS platform; if you are charging others to use your MailWizz instance, you must upgrade to an Extended License. Common Troubleshooting
Server Migration: You must reset the license every time you move your site to a new hosting provider or change your server's IP.
App Offline: If your app goes offline with a license error, it is often because the info in Backend > Settings > License is outdated compared to the MailWizz database.
Inspect Element Trick: If you need to see your current key (which is usually hidden by asterisks), right-click the password field, select Inspect, and change type="password" to type="text".
💡 Pro-Tip: Always reset your license before you delete your old server to ensure a smooth transition to the new one.
Are you seeing a specific error message (like "error_status: error") or just looking to transfer your license to a new domain? Reset your MailWizz license
MailWizz uses a straightforward license key system managed through Envato/CodeCanyon. For the license key to "work," it must be an authentic Purchase Code obtained from your Envato account How the License Key Works Verification during Installation
: When you first set up MailWizz, the installer requires your Purchase Code to verify the software's authenticity with the MailWizz API. Single Domain Limitation : A standard license key is valid for one end product
(one installation on one domain/subdomain). If you try to use the same key on a second live site, the system will typically block the activation or flag the installation. Automatic Updates To make a MailWizz license key work, you
: A valid, "working" key enables one-click updates directly from the MailWizz backend. Without a legitimate key, you cannot access security patches or new features. Common Issues & Troubleshooting
If you find that your license key is not working, it is usually due to one of the following reasons: Nulled Versions
: If you downloaded MailWizz from a third-party "GPL" or "Nulled" site, the license key check has likely been bypassed or broken. These versions are often infected with malware and will not receive official support or updates. Key Reset Requirement
: If you are moving your MailWizz installation to a new domain, the key will fail because it is still "locked" to the old domain. You must log into the MailWizz Customer Portal to reset your license so it can be reused on the new URL. Firewall Blocks
: Sometimes your server's firewall (like ModSecurity) may block the outgoing request to the MailWizz activation server. If the key won't validate despite being correct, check your server logs. Why Avoid "Key Generators"?
You may find sites offering "MailWizz license key generators." These do not work.
MailWizz validates keys against a remote database. Using a fake key or a "nulled" script poses a massive security risk to your email list data and often results in your server being blacklisted for spam or malware. your license for a new domain?
To get your MailWizz license key working correctly, you need to understand how it binds to your server environment. MailWizz is a self-hosted platform, meaning its license management is strictly tied to your specific installation. How MailWizz Licensing Works One Install per License : Each license (Regular or Extended) is valid for only one installation
. If you need to run MailWizz on multiple servers, you must purchase a separate license for each. IP Binding
: When you enter your purchase code during installation, the license is automatically associated with the IP address of your server. Validation Checks
: Once installed, the application performs periodic checks against MailWizz servers to verify the license and check for updates. MailWizz - Self-hosted email marketing software Common Issues & Quick Fixes If you are seeing errors like
"This license is already registered to another MailWizz instance," follow these steps: Reset Your License
: If you move your installation to a new server or change your IP, you must reset the license first. Use the official Reset License Tool Update Info in Backend : After resetting, go to your MailWizz dashboard: Backend > Settings > License Info
. Re-enter your original purchase code and save your changes. Check IP Updates
: You can also update the associated IP address directly through your MailWizz account where your licenses are listed. License Types License Type Best Use Case
Personal use or for your own websites where you don't directly charge others for use. SaaS platform
; allows you to charge customers to send their own campaigns.
For a step-by-step guide on the full installation process, including where to enter your code, refer to the official installation documentation
To develop a feature in MailWizz, you must first have a valid license key activated on your server. The application uses this key to verify ownership and bind the software to your specific server IP address. Core Requirements for Feature Development
If you are planning to extend MailWizz with new features, follow these standards:
License Activation: A working license key is mandatory during installation. If you move your development environment to a different server or local IP, you must Reset your License or update your info on the MailWizz Update License page to avoid "License already registered" errors.
Extension Framework: Rather than modifying the core files (which makes updates difficult), use the built-in extension system. MailWizz provides a Guide for Creating Extensions that allows you to inject custom routes, menus, and logic without breaking the main app. Developer Resources: Step 5: Debug Mode (Temporary) Add to main-custom
Example Extension: Start with the Example extension for development provided in the official knowledge base to understand the folder structure and hooks.
API Integration: For features that interact with external apps, use the MailWizz PHP SDK to add subscribers, create campaigns, or run actions via the API. Managing Your License During Development
This guide covers how to find, enter, and troubleshoot your MailWizz license key to get your email marketing platform up and running. 1. Where to Find Your License Key
When you purchase MailWizz, you typically receive a Purchase Code (which serves as your license key).
Envato/Codecanyon: If you bought it from Codecanyon, log into your account, go to Downloads, and click Download > License certificate & purchase code (text). The code will be inside that text file.
Direct Purchase: Check your email receipt or the "License" section of your customer dashboard on the official MailWizz website. 2. How to Activate the Key
The license key is required during the initial installation or when updating the software.
Initial Install: When you first install MailWizz on your server, the web installer will prompt you for your Purchase Code.
Post-Install: If you need to update or verify your license later, go to your Backend dashboard.
Navigate to Settings > License (or Misc > License depending on your version). Paste your code into the field and click Save/Verify. 3. Common Troubleshooting
If your license key isn't working, check these common issues:
One Key, One Install: MailWizz licenses are generally valid for a single domain/installation. If you try to use it on a second site, it will fail unless you "reset" the license or buy a new one.
IP/Domain Mismatch: If you moved your installation to a new server or domain, you must reset the license via the MailWizz Customer Area so it can be re-bound to the new IP.
Firewall Blocks: Your server needs to "talk" to the MailWizz licensing server to verify the key. Ensure your firewall (CSF, IPTables) isn't blocking outgoing connections to mailwizz.com. 4. Why the License is Critical
The key does more than just unlock the software; it enables: Auto-updates: Keeps your platform secure and bug-free.
Official Support: You cannot open support tickets without a valid purchase code.
Compliance: Using a "nulled" version (one without a key) often carries malware and puts your email reputation at risk.
Wait—are you trying to move an existing license to a new domain, or are you having trouble with an "Invalid Key" error?
What Is a Software License Key? Definition, Uses, and Why They Matter
Add to main-custom.php:
define('MW_DEBUG', true);
Then visit /backend/settings/license – detailed cURL output appears.
To avoid disruptions in your email marketing operations, follow these proven practices:
| Error Message | Cause |
|---------------|-------|
| License key not found | Typo or key not yet activated |
| Domain not authorized | License used on different domain |
| License blocked | Refund, chargeback, or abuse |
| cURL error 28 | Server cannot reach mailwizz.com (firewall/outbound block) |
Mark your license renewal date on a calendar. Renew at least one week in advance to avoid any sending interruptions.