AI-Native Email Security

The secure email gateway alternative that reads intent

Your gateway matches patterns. AI-written attacks never reuse one. Layer StrongestLayer on via API in 15 minutes and see what your gateway has been approving.

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Trusted by Orrick · Teays Valley Schools · law firms · K–12 · SaaS
$51.97 ROI per $1 spent
SOC 2Under 1% false positivesNo MX changesRuns alongside your SEG

What your gateway was never built to catch

Signature and reputation matching works on attacks that have been seen before. These have not.

Business email compromise

No link, no attachment, no payload to scan. Just a plausible request from a name your finance team recognises.

Vendor and invoice fraud

A real supplier thread, a changed bank detail. The domain passes authentication because it is genuinely theirs.

Account takeover

Mail sent from inside your tenant by a legitimate, compromised account. Perimeter filtering never sees it.

QR code phishing

The payload is an image. There is no URL in the body for a gateway to rewrite, inspect or block.

“Inbox Advisor saves my department hours every week by cutting down triage time on every alert, while the SOC dashboard shows exactly what my team needs at a glance. StrongestLayer is that rare tool that is both incredibly powerful and genuinely well-designed.
Thomas Wimbish · Director of Technology, Teays Valley Local Schools
90%
reduction in triage time, cases close in minutes
“StrongestLayer helps us in the areas where our users have fallen short. Using an AI model to detect and quarantine phishing emails is far better than relying on the user to catch them.
Ronald Greer · Director of Technology, Warren County
<1%
false positive rate, analysts stop chasing noise

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mail.company.com · alex@company.com
Mail
Inbox 24
Flagged
Sent
Archive
Inbox Advisor
StrongestLayer add-in active.
Suspicious? Ask the Advisor.
StrongestLayer
SECURITY OPERATIONS
Home
Threat Landscape
Message Log Early Access
STOPPED PRE-DELIVERY
2,000
CONFIRMED THREATS
THIS MONTH
Inbox
Your mailbox, with the StrongestLayer Inbox Advisor add-in.
AP
Acme Procurement now
Q3 invoice #4417: payment confirmation…
SW
Sarah Whitman 9:14
Re: MSA redlines, final pass attached
GH
GitHub 8:52
[app/core] PR #2291 merged
ST
Stripe 8:31
Your February invoice is available
Q3 invoice #4417: payment confirmation
AP
Acme Procurementinvoices@acmelogistics.com · to alex@company.com

Hi Alex,

Payment for Q3 invoice #4417 cleared on our side this morning — thank you for the quick turnaround.

A stamped copy is attached for your records. No changes to our remittance details; everything stays as it has for the last three years.

Best,
Dana Reeves · Accounts Receivable, Acme Logistics

invoice-4417-stamped.pdf · 182 KB
Reply Reply All Forward
Inbox Advisor
RIGHT IN YOUR MAILBOX
reading intent…
Sender verified: 3-year relationship, 142 prior threads
Stated purpose matches request: routine invoice
No credential requests, no payment redirects
SAFE TO TRUST 0TRUST SCORE
Legitimate vendor invoice. Safe to engage with links and attachment.
Threat Triage
Emails StrongestLayer stopped, each with an explainable verdict.
billing@acmelogisticss.com MALICIOUS
Updated banking details for Q3 invoice
no-reply@docusign-view.net MALICIOUS
Action required: document awaiting signature
ceo.office.mail@gmail.com MALICIOUS
Quick task - are you at your desk?
STOPPED PRE-DELIVERY · CASE #1382
Updated banking details for Q3 invoice
billing@acmelogisticss.com
BEC / FraudImpersonation: VendorFirst encounter
Verdict
EXPLAINABLE · PRE-INVESTIGATED
MALICIOUS HIGH SEVERITY
→Stated purpose: routine invoice
→Actual request: redirect payment
→Domain is 1 letter off real vendor
→Vendor has never used this bank
Hunt similar threats →
Threat Hunt
Turn one threat into an organization-wide sweep.
HUNT BY IOC
SWEEPING PROTECTED MAILBOXES 0 / 1,384
m.torres@…Finance
Updated banking details for Q3 invoice
● FOUND✕ QUARANTINED
j.okafor@…Accounts Payable
RE: Updated banking details for Q3 invoice
● FOUND✕ QUARANTINED
d.kim@…Procurement
Acme Logistics: new remittance information
● FOUND✕ QUARANTINED
+ 9 moreacross the org
Same sender infrastructure · same payload
● FOUND✕ QUARANTINED
MATCHES12
MAILBOXES8
REMEDIATED100%
TIME TO SWEEP1m 42s
Suspicious email? Ask the Advisor.