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Additional Information
News, release notes, and references to terms of service, privacy, and compliance information.
News and Announcements
Optimum (Optonline.net) Blocking IP Address Ranges
EFAIL - Encryption Vulnerability in OpenPGP and S/MIME
Best Practices
Link Detonation Protections and Sandboxing
Best Practices for Sending Email from Web Forms
Best Practices for Handling Attachments
Enabling Two Factor Authentication
How to Create Good Allow Rules
Tips and Tricks
How to Submit a Feature Request
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