Some users find that eM Client handles licensing differently, which may impact your decision to switch:
Look for confirmation. The title bar of the window should change from "Postbox (Unregistered)" to "Postbox (Licensed to [Name])". postbox license code exclusive
That would help me give you a useful, accurate response — including whether the report is credible or if it describes normal licensing behavior. Some users find that eM Client handles licensing
Disclaimer: This article is for educational purposes. Software licensing terms change frequently. Always verify codes directly with Postbox Inc. postbox license code exclusive