Email Security
AI
Cloud Email Security: Microsoft 365 & Google Workspace
AegisAI is API-native cloud email security for Microsoft 365 and Google Workspace. Stop the phishing, BEC, and account takeover that native filters miss.
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Cloud email security is no longer optional for any business that runs on Microsoft 365 or Google Workspace. Email is still where most attacks begin: phishing, business email compromise, account takeover, and a rising wave of AI-generated social engineering all arrive through the same channel your team lives in every day. The built-in filtering in your email platform is good, but it was never designed to catch the most targeted and evasive threats on its own.
That is the gap AegisAI closes, whether your company runs on Microsoft 365, Google Workspace, or both at once.
Cloud email security is protection that is delivered from the cloud and integrated directly into your cloud email platform, rather than installed as on-premise hardware or bolted on as a gateway in front of your mail flow. A modern cloud email security platform connects to Microsoft 365 or Google Workspace through their APIs, analyzes messages for threats, and remediates anything malicious, all without changing how your email is routed.
The advantage is simple. Because it runs in the cloud and connects through an API, it deploys in minutes, adds no latency to your mail flow, and can act on threats even after a message has landed in the inbox. That last point is where cloud-native tools pull ahead of the older gateway model.
Microsoft and Google both ship strong baseline protections, and they stop huge volumes of spam and commodity malware. The problem is the long tail: the low-volume, highly targeted attacks engineered specifically to slip past generic filters.
This gap is widening fast. In our own threat research, AI-generated phishing attacks grew 5x in 2025 and now slip past traditional filters at nearly double the rate of human-written email, reaching the inbox more than half the time. Against modern AI-generated attacks, native filtering is close to a coin flip.
These are the messages that cost companies real money. A convincing invoice from a spoofed vendor. A CEO impersonation asking finance to move funds. A phishing link that was clean at delivery and weaponized an hour later. Native filtering catches the obvious. It is the sophisticated, human-targeted attacks that get through, and those are exactly the ones that lead to a breach.
Effective email threat protection means adding a second, independent layer that is trained on precisely these threats. Not a duplicate of what your platform already does, but a distinct detection engine that catches what the first layer misses.
A lot of email security was designed in the era of the secure email gateway. To deploy it, you rerouted your mail flow, changed your MX records, and pushed every message through a third party before it reached your users. That model made sense fifteen years ago. Today it adds latency, creates a single point of failure, and leaves you blind to anything that happens after a message reaches the inbox.
AegisAI takes a different approach. We connect directly to Microsoft 365 and Google Workspace through their native APIs. There are no MX record changes, no mail rerouting, and no disruption to how your email already flows. You authorize the connection once through OAuth, and AegisAI begins analyzing messages in place, working alongside your platform's protections rather than in front of them.
The result is defense in depth without the operational drag. Your native controls keep doing what they do well, and AegisAI catches what slips past, then removes it automatically.
AegisAI is built to work with Microsoft 365 natively through the Microsoft Graph API. We layer on top of Exchange Online Protection and Microsoft Defender for Office 365, adding a separate detection engine rather than duplicating what Microsoft already does.
This distinction matters. Running two tools that catch the same obvious spam gives you very little. Running AegisAI alongside Microsoft gives you a second, independent set of eyes trained on the sophisticated, low-volume attacks that generic filtering tends to miss. Because we operate through the API, we can quarantine, remediate, and claw back malicious mail without you touching your Microsoft configuration or your mail flow.
For organizations consolidating on Microsoft 365 and asking whether the native security tier is enough on its own, AegisAI is the layer that turns "probably fine" into "covered."
If your organization runs on Gmail, AegisAI integrates directly through the Google Workspace APIs. Because the connection is API based, we see messages after your Google protections have already run, which means we are inspecting exactly the threats that made it through the first layer.
That post-delivery visibility is a real advantage. It lets AegisAI detect and remediate threats that only reveal themselves over time, such as a link that was safe at delivery and weaponized later, or an account takeover that unfolds across a series of otherwise unremarkable messages. When we identify a malicious message, we pull it from every affected inbox automatically, so a threat that reaches one user does not sit waiting in a hundred others.
Onboarding is a matter of connecting through OAuth and granting the right scopes. There is no agent to roll out and nothing changes for your users. From their perspective, their inbox works exactly as before. From a security perspective, everything has changed.
The clearest way to understand the value of a cloud-native platform is to compare it to the secure email gateway it replaces.
A gateway sits in front of your mail flow and inspects messages at the perimeter, which means it only sees a threat once, at the moment of delivery. A cloud email security platform sits inside your environment through the API, which means it has continuous visibility and can act on a message at any point, including after it has been delivered. A gateway requires MX record changes and weeks of rollout. A cloud platform connects in minutes with no change to routing. A gateway adds a single point of failure to every message your business depends on. A cloud platform adds none.
For most mid-market and enterprise teams already standardized on Microsoft 365 or Google Workspace, the gateway is a legacy tax. Cloud-native email security removes it.
AegisAI was built for this world from the start, by a team that spent years working on security infrastructure at Google. We did not bolt an API onto an aging gateway. We built multi-agent AI detection for the API-first environment your email already lives in.
That AI email security engine is what lets us catch the attacks that signature-based and rule-based systems miss. Social engineering does not always contain a malicious link or a known-bad attachment. Often the only signal is context: an unusual sender relationship, an out-of-pattern request, a tone that does not match the person it claims to be from. Catching that takes more than a single classifier. AegisAI runs a team of specialized AI agents that reason together on each message, the way a group of security analysts would. One weighs the sender relationship, another the language and intent, another the surrounding context, and they compare notes to reach a verdict in real time. That is how we flag a threat whose only tell is that it does not fit how your organization actually communicates.
A secure email gateway inspects mail at the perimeter before delivery and requires MX record changes to deploy. Cloud email security connects through your platform's API, deploys in minutes with no routing changes, and can remediate threats even after they reach the inbox.
No. AegisAI runs alongside your native protections as a separate detection layer. Your platform handles the baseline, and AegisAI catches the targeted threats that get through.
Because AegisAI is API-native, most organizations connect in minutes through OAuth. There is no agent to install and no change to your mail flow.
Yes. AegisAI protects Microsoft 365 through the Microsoft Graph API and Google Workspace through the Google Workspace APIs, from a single platform with the same detection engine on both.
Whether you standardize on Google Workspace, run entirely on Microsoft 365, or manage both at once, AegisAI protects all of it from one platform with the same fast, non-disruptive deployment.
You should not have to choose your email security based on which productivity suite you happen to run. Reach out for a demo and we will show you exactly what your current setup is missing.
