THIS CAN ONLY BE INSTALLED FROM A SUPER ADMIN ACCOUNT VIA 'DOMAIN INSTALL' . 
The only complete audit and protection tool for G Suite, it covers Drive, Email, Groups, Users, Sites, Calendars, Apps, Extensions, Google+, Printers, Devices, Chrome, Chrome Extensions, Classrooms and Collaboration. 15 Day Full Feature free trial.

It's 360 Auditing (©) gives you more oversight and protection than any other audit or security tool. GAT was the first audit and protection tool in the Google apps marketplace and it remains the premier tool for these needs.

Provides real-time search of Drive and Emails.

Provides silent access to all Docs and Emails (via 'Unlock').

Provides Folder maps for Drive and Email, Drive file tree maps, Drive external sharing maps, External Email flow maps and (with Let's Collaborate extension) collaboration maps.

Provides real-time blocking and reporting of actions like bank, credit card or SSN, etc. disclosure (via GAT Shield). The only tool to report every single minute of every single user activity (via GAT Shield and requires Google Chrome Manager).

With the Shield extension you can see every site your users visit and how long they spend there. You can control chrome login time windows and have idle-time automatic log-out.

Powerful compliance test on Docs and Emails in folders
Third party Apps audited and controlled
Logins and Google+ Audited

Up to 90% of documents still leave or enter in emails. Using GAT+ you can run a simultaneous audit on every email box and every Google Drive. 
Best security practice means we never retrieve email or file contents, so your corporate data will always remain secure

 With 'Unlock' you can revoke sharing rights, change owners on folder trees and download entire folders for off-line inspection.

Managers can now have audit authority delegated to them by Super Admins

You can measure collaboration and understand user behaviour

For Email you will be able to search on details like from, to, time, cc, bcc, subject and most importantly 'attachments'. Complex multi-part searches can be built

In addition you can see extra details like
Who sent what document and to whom and when
Top sender of email to domain
Top source of files out of your domain
Top sender of internal email
Key relationships

To install click 'Add it now'. If you have GAT installed, log out of GAT before you upgrade to GAT+

Reports are Deep, Clear, and Accurate

Scheduled reports run in the background

'General Audit Tool is must-have extension for anyone who manages Google Apps. ' - Jack Wallen, Tech Republic.