.gstore is GMailStore data
Key Features: .GSTORE File Extension
What is an .GSTORE file?
The gstore file extension is associated with GMailStore, an application for easier managing of Gmail account, available for Microsoft Windows system.
The gstore file stores some kind of data used by GMailStore.
This gstore file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.