: Are you asking about the legal requirements or registration codes needed to open a private PO Box or a commercial mail receiving agency?
Because Postbox has shut down, other email client developers have offered "exclusive" migration paths:
However, the search for an "exclusive" license code often veers into the grey and black markets of the internet. The high demand for premium software, coupled with a reluctance to pay the retail price, has spawned an industry of unauthorized license reselling. postbox license code exclusive
As of April 2026, following its acquisition by eM Client in late 2024. There are no longer any "exclusive" license codes or new keys being generated for sale.
That means to secure a perpetual, exclusive license. Once Postbox transitions fully to eM Client’s ecosystem, the classic one-time purchase may disappear. : Are you asking about the legal requirements
: 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
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: As of April 2026, following its acquisition by
The Postbox License Code Exclusive offers several benefits to users, including: