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Introducing Proteus: our foundational model built for email. Read the announcement
Agentic email security for Microsoft 365 + Google Workspace

The first AI lab for email security

A team of AI agents investigates every message to catch the attacks others miss.

Book a demo> book_demo→↵5-Minute Install·Proven in 5 Days·No MX Change
Trusted by leading
security teams at:

Built By Researchers From

Featured In

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What changed

AI spear phishing grew 5X in 2025.

AI spear phishing as a share of observed phishing

Observed across 2025, projected through 2028

AI spear phishing as a share of observed phishingObserved: 2.8% at the start of 2025 and 13.9% at the end of 2025. Projected with an S-curve model: about 31% in 2027 and about 45% in 2028, with a widening confidence interval. 0%15%30%45%60% PROJECTION → 2.8% 13.9% ~31% ~45% 2025202620272028
ObservedProjected (S‑curve model)Confidence interval

Observed: AegisAI production telemetry, 20,000+ phishing emails, start and end of 2025. Source. Projection: AegisAI S‑curve model.

Click‑through rate54%

of people clicked fully AI‑automated spear phishing in a controlled study, the same rate as emails written by human experts.

Heiding et al., 2024. 101 participants in four groups. Source

How it works

How Aegis investigates an email

Platform

Capabilities

Results

Fewer misses. A quieter queue.

One attack is a demo. These are measured in customer environments, against the rule-based filtering already in place.

90%
Fewer false positives
than rule-based filtering
Aegis-measured in customer environments
How Mesh measured it
22%
More attacks blocked
than the incumbent tooling caught
Including ones no rule existed for
5 days
To a proof of value (POV)
on your own mail
No rules or tuning
Customer proof

Fewer attacks get through. Teams get their time back.

Mesh
300+phishing and impersonation emails the existing tools had missed, surfaced in the first scan
Zeromissed legitimate business emails reported since deploying Aegis
Zeromanual tuning
Read the Mesh story
“Our dashboard shows everything from fuzzing attempts to AI‑generated spear phishing and BEC, and Aegis catches them all, without my team wasting time managing rules.”
Bam AziziCEO, Mesh
LangChain
<30sto first threat insight
Zeromaintenance burden
<5 mindeployment
Read the LangChain story
“Ryan set it up within five minutes. That’s it. It just works.”
Arthur StromquistSecurity Lead, LangChain
FAQ

Frequently Asked Questions

Does Aegis replace our existing email security?

No. It runs alongside a secure email gateway or native Microsoft and Google filtering. Some teams keep both; others retire the gateway once their own numbers make the case.

How does Aegis connect to our mail?

Through the Microsoft 365 or Google Workspace API, with an OAuth grant your admin controls and can revoke. There is no MX change and nothing in the delivery path.

Does it cover Microsoft 365 and Google Workspace?

Yes. Aegis uses each platform’s own API, and the investigation and verdicts work the same way on both.

Is our email used to train AI models?

No. Customer email content is not used to train models operated by third‑party AI labs, and message content is not shared with outside providers for training or product improvement.

How does remediation work?

In monitoring mode Aegis records verdicts without acting. With enforcement on, confirmed threats are removed from every mailbox they reached, and each action is logged with its reasoning.

What does the five-day evaluation require from us?

An admin to approve the API connection, which takes about five minutes, and a findings review at the end. Mail flow does not change and nothing is moved or deleted.

Your turn

See your results in five days.

Connect a tenant, run Aegis in monitoring mode, and compare it with what your current stack delivered.

Request a demo> request_demo→↵
About five minutes to connectNo MX changeRuns alongside your current stackMonitoring mode first

See what Aegis finds in your environment.

Connect a tenant, run in monitoring mode, and compare against what your current stack delivered.

Book a demo
→