Virtru for Google
Gmail Control
Virtru is Google’s recommended Gmail encryption provider. Set controls before sending messages and attachments, revoke access at any time, restrict forwarding, add PDF watermarks, and more.
Added Control for Your Emails
Specify who can access your emails and files directly from your compose window.
Recall Gmail Messages
Revoke access at any time – even after emails and files have been shared or opened.
Granular Gmail Insight and Control
Read Receipts
View when recipients have accessed your Gmail messages.
Audit and Restrict Resharing
See when and where people share your content, and prevent forwarding at any time.
Message Expiration
Restrict how long recipients can access your encrypted emails and files, either automatically via customizable policies, or on an ad-hoc per-message, per-user basis.
PDF Watermarking
Automatically watermark encrypted PDF attachments with each recipient’s email address.
Resources
The Complete Guide to
Email Encryption for G Suite Admins
Proven Techniques and Practical Tips for Securing Your Business in the Cloud.
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Virtru is Google’s recommended provider of email and file encryption in 
