StrongestLayer AI Email Security Platform is an AI-native email security platform that uses LLM-powered threat reasoning to detect sophisticated phishing, BEC, and AI-generated attacks that bypass legacy gateways. Deploys via API in minutes with no MX changes. Includes AI Advisor for real-time employee coaching and integrated human risk management.
StrongestLayer is an email security platform purpose-built for the AI threat era. Unlike legacy secure email gateways and first-generation cloud email tools that rely on static rules, pattern matching, and historical training data, StrongestLayer uses an LLM-native reasoning engine to analyze the intent, context, and deception techniques behind every email-detecting novel, AI-generated attacks that have no historical patterns to match.
AI-generated phishing now fools security professionals over 50% of the time while reducing attack costs by 95%. Traditional detection architectures fail because AI-enabled threat actors generate infinite personalized attack variants designed to evade known signatures. StrongestLayer solves this by asking not "Does this email look malicious?" but "What is this message trying to get the user to do, and does that make sense in context?"
Core Detection Architecture
TRACE's dual-evidence architecture simultaneously investigates business legitimacy and threat indicators across four dimensions: Harm, Intent, Anomaly, and Deception. This approach enables high-confidence detection of sophisticated attacks while maintaining extremely low false positive rates. The reasoning engine provides full explainability for every alert-analysts see all evidence (both normal and anomalous), the reasoning chain, and contextual investigation data, enabling triage in 1-2 minutes versus 15-20 minutes with traditional black-box platforms.
TRACE delivers coverage across all nine major attack vectors including generic BEC, syntactic variants, semantic variants, contextual BEC, conversation hijack, vendor email compromise, internal impersonation, atomic prompt attacks, and LLM-augmented BEC-the only detection architecture to achieve complete coverage across this full spectrum.
AI Advisor: Employee Empowerment
StrongestLayer's AI Advisor is a native Outlook and Gmail plugin that gives employees one-click, on-demand email trust verification. When users encounter a suspicious or unfamiliar email, they can instantly receive a clear trust score with detailed reasoning-covering sender reputation, behavioral signals, and contextual risk factors. This reduces false user submissions from 60-70% to less than 1%, eliminating the flood of benign reports that burden security operations teams. AI Advisor delivers in-context nano-training during actual email evaluation, replacing ineffective annual training videos with thousands of micro-learning moments embedded in real workflow.
Human Risk Management
The platform includes integrated, AI-driven phishing simulations and security awareness training. LLM-generated simulations create high-premise-alignment scenarios specific to each organization's supply chain, vendor relationships, and threat environment-far more effective than generic template-based campaigns. Personalized nano-training is delivered contextually within the inbox workflow, tailored to each employee's role and the threats actually targeting their organization.
Deployment & Integration
StrongestLayer deploys in under five minutes via API-based integration with Microsoft 365 and Google Workspace. There are no MX record changes, no DNS modifications, no inline mail flow disruption, and no learning period required. The platform supports multi-lingual detection with the same efficacy across 15 languages and features a zero-memory architecture-customer data never trains any model.
Operational Value
Security Operations: Self-service quarantine digest, time-saving automations for triaging similar threats, customizable email warning banners, and full detection explainability with transparent reasoning for every alert.
CISO Dashboard: Deep threat landscape insights, ROI calculator based on the FAIR Institute methodology, departmental risk analysis, and correlation of internal attacks with broader geopolitical threat intelligence.
Measurable Outcomes: Less than 1% false positive rate on advanced attacks, analyst triage reduced from 20 minutes to under 1 minute, 160+ SOC analyst hours saved per quarter, and 400-500% ROI within 12 months.
Highlights
LLM-Native Threat Reasoning: Detects AI-generated phishing, BEC, and novel attacks that bypass legacy pattern-matching and rule-based email security by reasoning through email intent, context, and deception techniques.
5-Minute API Deployment: Integrates with Microsoft 365 and Google Workspace via API with no MX changes, no mail flow disruption, and no learning period. Zero-memory architecture ensures customer data never trains any model.
AI Advisor & Human Risk Platform: Reduces false user submissions from 60-70% to <1% with real-time email trust verification. Includes LLM-generated phishing simulations and contextual nano-training-delivering 400-500% ROI within 12 months.
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Pricing is based on the duration and terms of your contract with the vendor, and additional usage. You pay upfront or in installments according to your contract terms with the vendor. This entitles you to a specified quantity of use for the contract duration. Usage-based pricing is in effect for overages or additional usage not covered in the contract. These charges are applied on top of the contract price. If you choose not to renew or replace your contract before the contract end date, access to your entitlements will expire.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
You buy this platform per seat per year under a contract. Six seat-band dimensions set the per-seat rate for different deployment sizes, from 1-500 up to 5001-10000 seats. You pick the band that matches your seat count. As your seat count moves into a different range, the applicable per-seat rate changes. A separate Additional Seats dimension lets you add seats beyond your initial purchase. All bands cover the same AI email security platform; the bands differ only by seat volume, not by features.
Top-of-mind questions for buyers
What counts as one seat for billing?
A seat maps to one mailbox. The platform connects through your mail provider's API and reads the mail flowing to each mailbox. You count the number of mailboxes you want protected, then pick the seat band that covers that total.
What happens to my per-seat rate as my mailbox count grows into a different band?
The applicable band changes based on your total seat count. Each band sets its own per-seat-per-year rate for the range it covers. If your count crosses into a new range, the rate for that range applies. Review your band when planning growth.
Do all seat bands include the same capabilities, or do larger bands add features?
All bands cover the same platform. The crawled content confirms no feature gating across deployment sizes. Each band differs only by the seat range it covers and its per-seat-per-year rate. You get the same email security capabilities at 500 seats or 10,000 seats.
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Vendor refund policy
Customers may cancel their StrongestLayer subscription at any time through their AWS account. Per AWS Marketplace policy, cancellations made within 48 hours of purchase are eligible for a full refund, processed automatically by AWS. After 48 hours, refund requests will be evaluated on a case-by-case basis. To request a refund after 48 hours, contact StrongestLayer at support@strongestlayer.ai. StrongestLayer does not provide refunds for usage-based charges already incurred.
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StrongestLayer’s AI Phishing Detection Gives Us Peace of Mind
Reviewed on Jun 15, 2026
Review provided by G2
What do you like best about the product?
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.
What do you dislike about the product?
It’s an additional expense, but aside from that, I really haven’t found any downsides.
What problems is the product solving and how is that benefiting you?
StrongestLayer helps address the gaps in how our users identify and report phishing emails.
Thomas W.
Powerful, Intuitive Tool That Saves Hours Every Week
Reviewed on May 19, 2026
Review provided by G2
What do you like best about the product?
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 in my eyes is that rare tool that is both incredibly powerful and genuinely well-designed—its interface is clean, intuitive, and a absolute joy to use.
What do you dislike about the product?
Sometimes the new release features they release are not always EDU friendly, but understand EDU is not their core clients.
What problems is the product solving and how is that benefiting you?
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 in my eyes is that rare tool that is both incredibly powerful and genuinely well-designed—its interface is clean, intuitive, and a absolute joy to use.