An Email Security Layer that Catches Financial Fraud

Trustmi is built to run alongside existing email security, not replace it. Traditional email security filters check for malware, bad links, and domain spoofing, but miss the clean, text-based social engineering that drives payment fraud. Trustmi adds a financial context layer alongside your existing email security, connecting by API to evaluate how a vendor normally communicates and whether their documents have been altered.

Trustmi’s Behavioral AI analyzes incoming emails, thread context, and attached documents against how that vendor has historically communicated and what’s known about the accounts involved. When a request departs from that history, like a change to bank details, Trustmi returns a verdict with the signals behind it. A filter asks whether the message is dangerous. Trustmi asks whether the request makes sense.

Trustmi checks invoices, bank letters, and other financial documents for signs they’ve been altered. Because these documents are software-generated, they should be consistent every time, which makes any deviation meaningful. Trustmi scans metadata for post-creation edits, flags layouts or fonts that depart from what the vendor normally sends, and identifies multi-source PDFs commonly used in fraudulent payment requests. Email security scans an attachment to see whether it’s dangerous. Trustmi checks whether it’s authentic.

Trustmi’s Email Fraud Detection software operates at the communication layer, analyzing how vendors write and whether their documents have been altered. It connects to your email and nothing else, so setup takes about ten minutes. Payment Security connects to your ERP, vendor, and payment systems, which involves more of your stack and gives the same Behavioral AI far more to work with: invoice history, payment history, and a verdict on every transaction before money moves. Teams that want coverage quickly start with email fraud detection. Teams that want the full payment path start with Payment Security.

When a legitimate vendor is compromised (VEC), standard email security trusts the sender. Trustmi evaluates the request instead: how that vendor normally writes, whether the attached documents match what they’ve sent before, and what’s known about the account being named. Compromised accounts tend to show small shifts first, like a new name in the thread or an invoice template that changed.

Trustmi doesn’t block a message, instead it returns a verdict with the signals behind it, so security and finance can see why the request looks suspicious. The thread history, sender details, and document forensics are compiled into a timestamped timeline with recommended next steps, delivered in the workflow tools your teams already use. As the conversation continues and new details arrive, the verdict updates.