Digital Guardian Agari =link= Jun 2026

Agari builds a "Trust Index" for senders. It leverages the massive dataset of email traffic it sees (as part of the DMARC ecosystem) to understand the "normal" behavior of legitimate brands. This allows it to automatically block emails that fail to authenticate against the genuine sender's standards, significantly reducing false positives.

Agari operates as a true Digital Guardian by moving beyond reactive blocking to active identity verification. It relies on three core pillars: digital guardian agari

Digital Guardian acquired Agari, and then the combined company was acquired by Fortra . Agari builds a "Trust Index" for senders

Agari is best known for its distinct approach to email security: rather than just looking for "bad" links or attachments (legacy defenses), it focuses on . It uses data from the billions of emails it processes to verify if an email is truly coming from who it claims to be. It is particularly dominant in the financial services and healthcare sectors due to its robust defense against vendor email compromise. Agari operates as a true Digital Guardian by

Agari is the undisputed leader in DMARC (Domain-based Message Authentication, Reporting & Conformance). The Guardian doesn't just let you monitor your domain; it helps you move from "monitor" to "quarantine" to "reject." For every legitimate email sent, Agari creates a cryptographic handshake. For every imposter—even those using lookalike domains like rnicrosoft.com —the Guardian slams the door.