When your team connects Gmail, Outlook, and WhatsApp into a single workspace, communication becomes faster and more collaborative. But it also means your most sensitive customer conversations, data permissions, and access controls all flow through one platform.
That’s a significant amount of trust to place in any tool.
At AirChannel, we built our customer communication management software with security as the foundation, not an add-on, not a checkbox. That’s why we’re proud to announce that AirChannel has officially achieved Google CASA Tier 2 Verification, an independently validated security certification confirming our platform meets rigorous, industry-recognized standards for protecting your team’s data.
Here’s what that means for you, and why it matters.
What Is Google CASA? Understanding the Framework
CASA stands for Cloud Application Security Assessment. It is a security framework developed by the App Defense Alliance (ADA) and officially recognized by Google as part of its OAuth app verification process.
Basically, it is Google’s way of making sure that other apps handle your information safely. To pass, an app must go through official tests to prove its security meets high global standards.
Key facts about CASA:
- It is not a self-reported badge, companies cannot simply claim it
- It is conducted by accredited, independent security labs
- It validates controls against globally recognized security standards
- It is recognized by Google as part of the OAuth app approval process
For businesses evaluating customer communication management software, that independent validation is what sets CASA apart.
The CASA Tiers: Not All Verifications Are Equal
CASA is structured in tiers, and each tier represents a meaningfully different level of scrutiny.
Tier 1: Self-Assessment
At Tier 1, a company completes a self-assessment questionnaire against a defined security checklist. Key limitations:
- No external auditor involved
- No independent lab testing
- No hands-on technical validation
- Ultimately, a company evaluating itself
Tier 2: Independent Lab Assessment
To achieve CASA Tier 2 certification, AirChannel underwent a hands-on security assessment conducted by TAC Security, a Google-authorized independent security assessor.
- Tested against the OWASP Application Security Verification Standard (ASVS)
- Underwent a hands-on security assessment by an accredited third-party lab
- Had authentication, data storage, access control, and encryption independently verified
- Passed review by security experts, not just submit documentation
For teams choosing a unified inbox or customer communication tool, Tier 2 is the verification level that actually provides assurance.
Why Google CASA Tier 2 Matters for Your Team
Independently Verified Data Controls
When you use AirChannel’s customer communication management software, you’re not taking our word for it. A credentialed, independent security lab has tested and verified those controls. That’s a fundamentally different kind of confidence than a vendor’s self-reported security page.
Secure OAuth Implementation
AirChannel connects to Gmail and other Google services through OAuth, the standard protocol for granting app permissions. Our CASA Tier 2 verification confirms that we:
- Request only the minimum permissions necessary
- Handle access tokens responsibly
- Protect your team’s Google account data from unauthorized access or scope creep
Reduced Risk of Unauthorized Access
Shared inbox security is one of the most overlooked risks in team communication tools. Our verified architecture ensures:
- Clear controls over who can see which conversations
- Defined rules around who can act on behalf of whom
- Full logging of how access is used across your workspace
Enterprise-Grade Documentation for Regulated Industries
For teams in regulated environments, healthcare, legal, or financial services, CASA Tier 2 verification provides the third-party documentation that internal security reviews, procurement teams, and auditors actually require.
What We Built to Earn This Verification
Achieving CASA Tier 2 reflects the security-first engineering choices we made from day one. Here’s what powers AirChannel’s verified security posture:
- AES-256 encryption at rest: All customer data stored in AirChannel is fully encrypted.
- TLS 1.2+ in transit: All data transmitted between your team and our platform is secured against interception.
- Secure cloud infrastructure (AWS): AirChannel is hosted on Amazon Web Services. This means we use the highest industry safety rules to protect how we process, save, and send your data.
- Granular, role-based access control (RBAC): Administrators can define precisely who can access which inboxes, conversations, and customer data, enforcing least-privilege principles across your workspace.
- Comprehensive audit logging: Every significant action is logged and available for review, giving your team full operational visibility and accountability.
The Security Gaps That CASA Tier 2 Helps You Avoid
Many communication tools were not designed with data protection as a core requirement. Common risks in typical shared inbox tools include:
- Unencrypted or weakly encrypted data storage leaves customer conversations exposed in a breach
- Overly broad OAuth permission scopes, granting far more access to Google accounts than necessary
- No formal access control, meaning any team member can access any conversation with no audit trail
- No independent validation, so security claims are taken at face value
AirChannel was built from the ground up to be secure. Security isn’t just something we added later; it’s part of the foundation. The CASA Tier 2 process proves this through a review by outside experts.
A Note from Our Founder
“When teams connect channels like Gmail, Outlook, IMAP, and WhatsApp into a single workspace, they’re centralizing sensitive customer conversations in one place. That level of trust comes with real responsibility.
AirChannel’s CASA Tier 2 verification specifically validates how we securely handle Gmail user data. At the same time, we apply the same security-first principles across all supported channels.
Security isn’t a milestone we achieve once. It’s a continuous commitment we uphold every day.”
This way of thinking has shaped every technical choice we’ve made at AirChannel. It will continue to guide our plans for the future.
A Secure Shared Inbox Is a Competitive Advantage
Your customers trust you with their conversations. Your team trusts you with their access credentials. Your business depends on both.
Choosing customer communication management software that has been independently verified isn’t just a responsible decision. In a world of increasing data regulation and growing cybersecurity threats, it’s a strategic one.
AirChannel’s Google CASA Tier 2 Verification is like a seal of approval. It means that when you combine Gmail, Outlook, and WhatsApp into one place, you can trust that security experts have already tested and approved the platform.
Ready to see a secure shared inbox in action?
Book a demo or start your free trial at airchannel.ai. You can see exactly how our top-tier security works to protect your information every day.
