As of April 2026, Postbox is no longer available for purchase following its acquisition by eM Client in late 2024. There are no longer any "exclusive" license codes or new keys being generated for sale.
If you are an existing user or looking for information on your previous license, here is the current state of Postbox licensing: 1. License Validity and Status
Lifetime Licenses: If you already own a Postbox Lifetime License, it remains valid for the Postbox application and will never expire.
Compatibility: You can continue using the app as long as your operating system (Windows/macOS) and email providers remain compatible.
Support: Formal technical support ended on December 22, 2024, but the Postbox Help Center is scheduled to remain online until December 22, 2025. 2. Retrieving Your License Code
If you lost your existing code, you can still use the automated retrieval tools for a limited time:
Retrieval Page: Use the License Code Retrieval tool by entering the email address used for the original purchase.
Registration Rules: When entering your code in the app (Help > License), you must enter your name and code EXACTLY as they appear in your fulfillment email, including any specific spaces or capitalization. 3. "Exclusive" Transition Offers
The term "exclusive" now primarily refers to the migration deals offered to Postbox users moving to eM Client:
50% Discount: Most Postbox customers are eligible for a 50% discount on their first year of eM Client or a one-time purchase.
Migration Guide: eM Client has released a specific transition guide for Postbox users to help map familiar features like "Quick Bar" (now "Quick Move") and "Account Groups" to the new interface. 4. Comparison for Power Users
Some users find that eM Client handles licensing differently, which may impact your decision to switch:
Device Limits: While a standard Postbox license covered multiple personal machines, eM Client's personal license traditionally supports fewer concurrent devices.
Feature Gaps: Certain "power user" features like "Responses" (canned replies) and specific archive folder configurations in Postbox differ in their eM Client implementation. How to Register Your License Code - Postbox Support
It sounds like you're referring to a specific report or finding about Postbox (the email client) and something involving license codes or an exclusive arrangement.
Just to clarify — are you:
If it’s the second one (“interesting report”), could you share a bit more about what the report said? For example:
That would help me give you a useful, accurate response — including whether the report is credible or if it describes normal licensing behavior.
As of October 2024, Postbox is no longer available for purchase following its acquisition by eM Client. Development has officially ceased, and the software is now in "end-of-life" status. Status of License Codes
If you are an existing user or have a valid license code, the following rules apply:
Perpetual Use: You can continue to use your current version of Postbox as long as it remains compatible with your operating system.
Cross-Platform: A single license key is valid for both macOS and PC.
Per-User Licensing: Each license is per user, meaning you can install it on any machine you personally use.
Retrieval: If you have lost your code, you can still retrieve it by entering your purchase email address on the Postbox License Retrieval page. Exclusive Offers for Postbox Users postbox license code exclusive
Because Postbox has shut down, other email client developers have offered "exclusive" migration paths:
eM Client: The acquiring company has historically offered discounts to Postbox users to encourage switching to their platform.
Mailbird: As part of a competitive campaign, Mailbird has offered special deals for Postbox license holders, sometimes providing their software for free or at a significant discount upon entering a valid Postbox key on their dedicated landing page. How to Register an Existing Code
If you have a code and need to activate a fresh installation:
Open Postbox and go to the Help menu (Windows) or Postbox menu (macOS).
The story of the "exclusive" Postbox license code has changed significantly over the past year. If you are searching for a way to buy a new license or find a "secret" discount code, here is the current reality as of April 2026. The Current State: Postbox is No Longer for Sale
In late October 2024, Postbox was acquired by eM Client. As a result of this acquisition, several key changes occurred:
Sales Discontinued: You can no longer purchase new Postbox licenses from the official store.
Development Halted: The app has entered "End-of-Life" (EOL) status, meaning no new features or security updates are being developed.
Official Support Ended: Technical support for Postbox officially concluded on December 22, 2024. The Real "Exclusive" Code: Moving to eM Client
While you can't get a new license code for Postbox itself, the "exclusive" deals now center on transitioning existing users to eM Client. The acquisition included an offer for loyal Postbox fans to move to the new platform at a steep discount:
100% Off: For users who purchased Postbox on or after September 22, 2024, eM Client offered a completely free license for a one-time purchase or the first year of a subscription.
50% Off: All other existing Postbox license holders were eligible for a 50% discount on their first eM Client license.
Note: While many of these specific transition offers were originally slated to expire in early 2025, you can still check the Postbox Transition Guide for any extended loyalty discounts. How to Manage Your Existing License
If you already own Postbox and just need to find your code to reinstall the app on a new machine: How to Register Your License Code - Postbox Support
The transition from Postbox to eM Client has introduced exclusive offers for existing Postbox license holders following its acquisition. Exclusive Transition Offers As of late 2024, Postbox has been acquired by
, and development for Postbox has officially ended. To support users during this transition, the following exclusive discounts are available for moving to eM Client: 100% Discount : Users who purchased a Postbox license on or after September 22, 2024
, are eligible for a free (100% off) one-time purchase or their first year of subscription to eM Client. 50% Discount
: All other Postbox customers (those who purchased before September 22, 2024) are eligible for a 50% discount
on their one-time purchase or first year of subscription to eM Client. Refund Option
: If you purchased Postbox on or after September 22, 2024, you also have the option to request a full refund
instead of the eM Client offer, provided the request was made by December 22, 2024. Managing Your Postbox License
While Postbox is no longer for sale, existing lifetime licenses remain valid for the current product. Registration : To register an existing code, go to the menu in Postbox, select As of April 2026, Postbox is no longer
, and enter your name and code exactly as they appear in your fulfillment email. : If you have lost your code, you can use the Postbox License Code Retrieval tool by entering your purchase email. Support Timeline : Official support for Postbox ended on December 22, 2024
, and the online Help Center is scheduled to remain available until December 22, 2025 Postage & Local Mail Alternatives
If your query refers to physical "postbox" services or digital postage: Digital Postage Codes
: Some postal services (like An Post in Ireland) allow you to buy a 12-digit digital stamp code via an app, which you write directly on the envelope before dropping it in a physical postbox. PO Box Discounts : Exclusive discounts (such as 20% off with a Fazaa Card at Emirates Post
) are occasionally available for physical postbox rentals and renewals. discount link for the eM Client transition or more details on digital postage options for your region? Delivering Happiness Wherever You Are | Emirates post
Managing your inbox can feel like a full-time job, but power-users have long turned to Postbox to reclaim their time. While the software has recently entered a new chapter following its acquisition by eM Client, existing license holders still enjoy a suite of professional features designed for high-volume communication. What is a Postbox License Code?
A Postbox license code is a unique alphanumeric key that unlocks the full desktop application for Windows or macOS. Unlike many modern apps that require monthly fees, Postbox was traditionally sold as a one-time purchase, often through a "Lifetime License" that provided access to all future updates for that product version. Key Licensing Facts:
Per-User Model: A single license covers one individual across all the computers they personally use, whether they are Macs, PCs, or a mix of both.
Cross-Platform: The same code works on both Windows and macOS.
Perpetual Access: Postbox Lifetime Licenses do not expire; you can continue using the version you purchased as long as it remains compatible with your operating system. Exclusive Features Unlocked by Your License
Using a valid license code provides access to "superpowers" that aren't found in standard free email clients:
Account Groups: You can organize multiple email accounts into specific "Work" or "Personal" groups, allowing you to view them separately or unified.
Focus Pane: This exclusive tool lets you instantly filter your inbox by attribute (e.g., unread, attachments), contact, or topic to cut through the noise.
Pre-Canned Responses & Clips: Save hours with professional email templates and "Clips"—pre-formatted HTML blocks that allow you to insert complex styling or text without coding.
Advanced Privacy: The Anti-Tracking feature alerts you when a sender has embedded tracking pixels in an email, preventing them from knowing when you’ve opened it. The 2025 Transition: Postbox and eM Client Postbox: The Power Email App
Postbox, the email client, was acquired by eM Client in October 2024. As a result, Postbox is no longer available for purchase, and development has ceased. Your existing Postbox license code now serves as an "exclusive" ticket to special transition offers or for maintaining your current installation. 1. Exclusive Transition Offers
Because you own a Postbox license, you are eligible for exclusive discounts to migrate to other email platforms: eM Client (Official Successor):
100% Off: If you purchased Postbox on or after September 22, 2024, you can get eM Client for free (one-time purchase or first year of subscription).
50% Off: All other Postbox license holders receive a 50% discount on their first year or one-time purchase.
Deadline: These offers were originally extended to January 31, 2025, but check the eM Client Postbox Discount page for any current status.
Mailbird: Some third-party competitors like Mailbird have previously offered deals where you can insert your Postbox license key to unlock specific discounts. 2. How to Use Your License Code in Postbox
If you plan to keep using your current version of Postbox, your license remains valid and will never expire. To activate it:
Locate Your Code: If you lost your key, use the Automated Retrieval Tool by entering the email used for purchase. Registration Steps: Open Postbox and go to the Help menu. Select License. Looking for a valid license code for Postbox (e
Enter your name and license code exactly as they appear in your fulfillment email (including any extra spaces).
Multiple Devices: Your license is per user, meaning you can use one code on all personal machines you use (Mac or PC). 3. Key Deadlines and Support
Technical Support: Official support for Postbox ended on December 22, 2024.
Help Center Access: The Postbox Support Website is scheduled to remain available until December 22, 2025.
Operating System Compatibility: Your license will work as long as your current OS and email provider remain compatible with the last released version of Postbox. License Code Retrieval - Postbox
Postbox, the desktop email client, has been acquired by and is no longer available for purchase. Support for the product ended on December 22, 2024 Managing Existing License Codes
If you already own a Postbox license, you can still use the software, as lifetime licenses do not expire. Registration : To activate your code, open Postbox and go to Help > License
. Enter your name and license code exactly as they appear in your fulfillment email. : If you have lost your code, you can use the Postbox License Code Retrieval
tool by entering the email address used for the original purchase. Device Limit
: A single license covers all machines (Mac or PC) that you personally use. Exclusive Offers for Transitioning
Because development has ceased, Postbox users are eligible for exclusive discounts to switch to Full Credit
: Users who purchased Postbox on or after September 22, 2024, can receive
a one-time purchase or the first year of an eM Client subscription. Partial Discount : All other existing Postbox customers are eligible for a 50% discount on eM Client. Third-Party Alternatives : Other email clients, such as
, have previously offered special discounts to Postbox users who provide their existing license key. a lost key or your data to a new email client? How to Register Your License Code - Postbox Support
Postbox is an email client that aims to provide a clean, intuitive interface for managing email accounts. If a license code is described as "exclusive," it typically means that the code is unique to a particular user or instance of the software and is not shared or used across multiple accounts or installations.
Here are a few points that might be relevant:
Postbox Inc. is a small, independent software vendor (recently acquired by eM Client, but still operating independently). They rarely release public "exclusive" codes to the wild. When they do, these are:
True postbox license code exclusive offers are almost always distributed through official partnerships (e.g., with StackSocial, MacHeist, or BundleHunt) or directly via the Postbox newsletter.
If your search for a postbox license code exclusive turns up empty, consider these legitimate alternatives:
However, none match Postbox’s unique hybrid of email and document management. It is worth the wait for a genuine exclusive deal.
If after a thorough search you cannot locate an active postbox license code exclusive, do not despair. The free trial for Postbox lasts 30 days with full features. After that, the "free" version limits you to 2 accounts.
Here are three legitimate alternatives to paying full price: