Native filtering handles bulk. What gets through is written for one recipient, sent from infrastructure too new to blocklist, and increasingly carries no payload at all. Sentaro judges intent and relationship instead of signatures.
Microsoft Defender and Google’s built-in protection are a good baseline for bulk attacks, and Sentaro is designed to run with them rather than replace them. What it adds is the behavioral layer for what those filters miss by design: targeted, novel and payload-free attacks. Because it connects over API inside the tenant, it also sees internal and historical mail, which is where an attack spreads once an account is compromised.
Verdicts are automatic and remediation is a click. Alerts fire when a decision is needed, not for every blocked message. One API connection covers phishing, business email compromise and shadow IT discovery in the same platform, so there is no second tool to buy, deploy or maintain.
Every verdict shows its reasoning, so admins can audit decisions rather than trust a score. Similar messages across all mailboxes can be remediated in one action.
Coverage compared
| Native filtering | Secure email gateway | Sentaro | |
|---|---|---|---|
| Bulk phishing and spam | Strong | Strong | Complements, not replaces |
| AI-written targeted phishing | Limited | Limited (signature-based) | Core strength |
| QR-code decoding and analysis | Partial | Rarely | Yes |
| OAuth consent phishing | Limited | No | Yes: mail flow + grant visibility |
| Payload-free BEC | Limited | No | Yes |
| Learns your organization’s normal | No | No | Yes |
| Deployment | Built in | MX rerouting | API, four minutes |
Native filters are a good baseline for bulk attacks. Sentaro adds the behavioral layer for what they miss by design: targeted, novel and payload-free attacks. The two run together, and Sentaro deploys alongside without MX changes.
Gateways reroute your mail through signature-based scanning outside your environment. Sentaro connects via API inside Google Workspace or Microsoft 365, sees internal and historical mail as well, and judges behaviorally, which is what catches never-seen-before attacks.
Yes. Intent and behavioral signals do not require a payload. That class of attack, including business email compromise, is a core design target rather than an edge case.
Malicious messages are removed or quarantined automatically, similar messages across all mailboxes can be remediated in one action, and each verdict shows its reasoning so admins can audit decisions.
Four minutes. An admin connects Sentaro to Google Workspace or Microsoft 365 via API. Protection starts immediately and historical visibility follows within 15 minutes, with no mail rerouting and no end-user setup.
Yes. Because Sentaro sits inside the environment via API, it also evaluates internal mail, which is where attacks spread after an account is compromised.
Connect Google Workspace or Microsoft 365 in four minutes and protection begins immediately.