Is a new license necessary after one year?
No You do not need a new license key every year
GcMail Archive is not offered as subscription software. You can use any full version for as long as you like. When we release a new full version, such as GcMail Archive version 4 or 5 etc. you can purchase an upgrade license at a discounted price. But you do not have to!
If older versions are no longer rushed by Operating System 10, you may need to upgrade to a new version of GcMail Archive later.
An upgrade license is always offered at a discounted price!