Security and trust sit at the heart of Booksmate. Your inbox can contain invoices, receipts, supplier emails, payment records, customer documents, and sensitive business information. When software connects to Gmail to help collect financial documents, the security of that connection matters enormously. That is why we are proud to announce that Booksmate is CASA Tier 2 Certified.
CASA, the Cloud Application Security Assessment, is an independent security verification framework used in Google’s app verification process for applications that access sensitive Google user data. Achieving Tier 2 certification means Booksmate has undergone an external security assessment confirming that our systems handle Gmail API access, user data, and connected account permissions responsibly and securely.
For businesses using Booksmate, this is not just a badge. It represents a detailed technical review of how Gmail access is requested, how authentication is handled, how data is processed, and how connected email accounts are protected. Independent security assessors review areas such as authentication, access controls, data handling, storage practices, and how the platform interacts with Google APIs.
This certification is particularly important for companies using Booksmate to collect invoices and receipts from Gmail. Booksmate connects through Google’s secure OAuth flow, meaning users authenticate directly with Google. Booksmate does not see or store your Google password. Access can also be revoked from your Google account settings at any time.
In practical terms, CASA Tier 2 certification gives businesses greater confidence when connecting Gmail to Booksmate. The Gmail integration is designed to find invoice and receipt emails, extract the relevant financial documents, and save them into Booksmate without turning the product into a permanent copy of your inbox. Email body content is not permanently stored, and only the information needed to support the invoice collection workflow is retained.
For our users, the result is simple. You can connect Gmail to Booksmate knowing the system has been independently reviewed for security and compliance. Your invoice collection becomes automated, while Gmail access is handled through Google’s approved API and OAuth process.
Security should not be an afterthought in invoice automation. If a product connects to your inbox and helps manage financial documents, trust has to be part of the foundation. CASA Tier 2 certification reinforces that Booksmate is built not only to save businesses time, but to do so responsibly and securely.
As Booksmate continues to evolve with supplier portal fetching, email invoice collection, AI extraction, Google Drive export, and accounting integrations, maintaining strong security standards will remain a core priority. This certification marks another step in building invoice automation software businesses can trust.
