# gyb > Command line tool for locally backing up Gmail messages using Gmail's API over HTTPS. > More information: . - Estimate the number and the size of all emails on your Gmail account: `gyb --email {{email@gmail.com}} --action estimate` - Backup a Gmail account to a specific directory: `gyb --email {{email@gmail.com}} --action backup --local-folder {{path/to/directory}}` - Backup only important or starred emails from a Gmail account to the default local folder: `gyb --email {{email@gmail.com}} --search "{{is:important OR is:starred}}"` - Restore from a local folder to a Gmail account: `gyb --email {{email@gmail.com}} --action restore --local-folder {{path/to/directory}}`