A key file is a file with the .key extension that you receive from Kaspersky Lab. Key files are designed to activate the application by adding a key.
You receive a key file at the email address that you provided when you bought Kaspersky Secure Mail Gateway or ordered the trial version of Kaspersky Security.
You do not need to connect to Kaspersky Lab activation servers in order to activate the application with a key file.
You can recover a key file if it is accidentally deleted. You may need a key file to register with Kaspersky CompanyAccount.
To recover a key file, do one of the following: