Case Study: Glu achieves DMARC enforcement and complete email protection with Valimail (integrated with Microsoft 365 E5)

Glu Chooses Microsoft 365 E5, ATP, and Valimail for Complete Email Security Solution

Glu, a leading mobile game developer with a decade-long track record and a core value of "Trust Each Other," needed an easy-to-use, automated email security solution that would keep pace with evolving threats without diverting resources. Their security team was concerned about the complexity and risk of implementing DMARC, SPF, and DKIM manually—worried that mistakes could block legitimate mail—so they sought a best‑of‑breed, low‑overhead approach.

Glu deployed Microsoft 365 E5 with ATP alongside Valimail Enforce and Valimail Defend, leveraging tight integration and automation to simplify configuration and management. ATP delivered immediate protection for links and attachments, and Valimail enabled DMARC enforcement within 60 days (vs. typical year‑plus timelines), eliminating exact‑domain phishing and ensuring fraudulent emails no longer reach employee, customer, or partner inboxes.

Glu

Dominic Martinelli

Vice President, Customer and Technical Operations