For Version: 6.3.3 , Attachments are not being sent and only summary report is generated and sent. We’ve already selected required attachment type in settings and Email settings are as follows:
1 - Katalon Studio allows users to receive summary reports via Email after Test Suites execution. You can access this setting at Project > Settings > Email.
2 - You can execute automation test without launching Katalon Studio by using command line mode execution, you could use Jenkins to run a command line script.
How to setup the integration with Jenkins
3 - Katalon Studio supports the ability to capture test execution via video format.
After creating a test suite in Katalon Studio, select Project > Settings to open project Settings dialog box. Navigate to Report section