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Sentaro review

Email and SaaS threat protection for Microsoft 365 and Google Workspace teams.

By Ciroapp Editorial Team · Updated Oct 9, 2026

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Vendor page checked Oct 12, 2026

Ciroapp score

3.5/ 5

Strong EU story, pricing stays hidden

Sentaro puts threat verdicts right inside Microsoft 365 and Google Workspace, so held and blocked mail never reaches the inbox. The Sweden-hosted engine and DORA and NIS2 framing suit regulated EU teams, but pricing stays hidden and two of four detection vectors are still planned. Overall, a solid fit for firms whose critical path skips identity and behavioral coverage.

Pros

Pros:Acts on its own verdict, so clean mail delivers, doubtful mail is held, and threats are blocked before anyone opens them.
Pros:One engine reads message, app, identity, and behavioral signals, tying a single attack chain together instead of splitting it into tickets.
Pros:The engine runs on Microsoft Azure in Sweden, EU only, with per-tenant encryption keys and TLS 1.2+ in transit.

Cons

Cons:Identity and behavioral protection are planned for Q4 2026, so only message and app coverage is live today.
Cons:No public price list, no published tiers, and no self-serve sign-up, so you need a direct quote to compare cost.
Cons:SOC 2 and ISO 27001 are in progress rather than certified, which can stall a security review.

Best for

Microsoft 365 and Google Workspace teams that want phishing and BEC handled inside the mailbox
Nordic and EU firms facing DORA, NIS2, or similar evidence requests
IT and security teams without the headcount to triage every alert by hand

What is Sentaro?

Sentaro is an AI email and SaaS security tool for Microsoft 365 and Google Workspace. It runs inside your tenant and watches four kinds of signal: messages in email, Slack, and Teams; app OAuth grants; credential leaks and lookalike domains; and user behavior. One engine classifies intent, then delivers, holds, or blocks.

Message and app protection are live now, with identity and behavioral coverage planned. It targets teams, especially regulated firms in the Nordics and wider EU.

Verdict

Best for Security and IT leads at Microsoft 365 or Google Workspace firms of a few hundred seats and up, especially those answering to a European regulator..

A credible fit for regulated EU firms that want message and app threat decisions made inside the tenant, provided the planned identity and behavioral modules are not on your critical path.

Strengths

Acts on its own verdict: harmless mail delivers, doubtful mail is held, threats are blocked before anyone opens them.
One engine reading message, app, identity, and behavioral signals ties an attack chain together.
Engine hosted on Microsoft Azure in Sweden, EU only, under EU law.

Watch-outs

Identity and behavioral protection are planned, not live, so coverage is partial today.
No public pricing page and no self-serve plan, so cost needs a direct quote.
SOC 2 and ISO 27001 are in progress rather than certified.

Pricing trap for Sentaro: Sentaro publishes no price list, so there is nothing to compare until you request a quote for your seat count.

Sentaro Key Features

✨ Four signals, one verdict engine

Sentaro sits inside your tenant and watches four kinds of signal: messages, app grants, credential leaks, and user behavior. One engine classifies intent before anyone interacts with it. Clean mail is delivered untouched.

Doubtful mail is held until someone verifies it. Real threats are blocked before a recipient sees them, and sessions tied to a threat get revoked.

📬 Messages read the way an analyst would

Every message is read the way an analyst would. Sentaro asks who is really asking, from where, and whether the ask fits the relationship. A fake CFO reply with no thread behind it gets moved out of the inbox before anyone opens it.

The verdict shows up as a label, right where people read their mail.

✨ Scope-level app risk, per user

Every app that touches your tenant has a reach you may not have mapped. Sentaro reads OAuth grants and shows what each connected app can actually access. The usual finds are unapproved AI tools and abandoned integrations that still read mail.

Consent gets revoked, and the publisher is traced back to related activity.

✨ Identity and behavioral coverage, planned for Q4 2026

Two of the four vectors aren't live yet. Identity looks outside your tenant at credentials found in breach dumps and lookalike registrations of your brand and your suppliers. Behavioral watches what a user does against their own normal, like forwarding rules, off-hours sessions, and unusual data movement.

Both arrive in Q4 2026.

🛡️ Sovereign by design

Threat decisions land on infrastructure Sentaro runs, hosted on Microsoft Azure in Sweden under EU law. That matters when you answer to a European board or regulator. Three things support the case:

Use Cases

🛡️ Stopping a fake invoice before anyone opens it

Anna signs in as your CFO, and an invoice arrives with new bank details. No thread, no link, no attachment. Sentaro reads the ask itself and moves the message out before anyone opens it.

Expected outcome: Nothing lands in the inbox, so no help desk ticket follows.

🔑 Cleaning up app access in your tenant

Someone connects a PDF summarizer nobody vetted. It asks to read all your mail and files. Sentaro shows what every connected app can reach, per user, then revokes consent for unapproved AI tools and forgotten integrations from years back.

📋 Answering your board and your regulator

Your board asks how email and app threats are handled, and where decisions are made. Sentaro runs on Microsoft Azure in Sweden, under EU law, with data encrypted at rest on per-tenant keys and TLS 1.2+ in transit. It also lines up with DORA and NIS2 evidence requests.

🔄 Swapping two tools for one engine

A Nordic payments firm with 400 seats under DORA dropped its secure email gateway and its phishing-simulation program. Sentaro blocked 14 BEC attempts in month one, and stopped a live vendor-compromise chain in week two.

Tip: Run the 30-minute walkthrough on your own live traffic.

Sentaro pricing

Prices not verified yet — see the vendor page.

Sentaro's pricing page

View pricing page screenshot

Price history

Tracking prices since Oct 10, 2026. No price change detected yet.

Pricing range: $3.05

Pricing types: Monthly subscription, Per seat pricing

Pricing notes

Sentaro doesn't publish its prices on the public site. Rates are quoted directly, and the platform is aimed at regulated teams running Microsoft 365 or Google Workspace.

Sentaro doesn't post public list prices. Access is arranged through a direct conversation with the team.

Here's what that means in practice, and what to ask before you buy.

The site tells the product story in real detail — what it covers, where it runs, who it serves — but shows no dollar figures. There are no published tiers, no seat rates, and no monthly or annual price to compare. So you can't line Sentaro up against a rival on cost without talking to someone first.

What the page does give you is scale and scope. The case study describes a Nordic payments firm running 400 seats under DORA. That firm swapped out a secure-email gateway and a phishing-simulation program for Sentaro, and blocked 14 BEC attempts in its first month. This is a platform built for teams of that size, not for a handful of mailboxes.

Two of the four detection vectors are live right now: Message and App. Identity and Behavioral arrive in Q4 2026. If you need those today, build the timeline into your plan.

Sentaro also sits inside your own tenant and runs on infrastructure in Sweden, under EU law. That's the sovereignty pitch, and it's aimed at firms answering to a European board and regulator.

A few things worth asking on the call:

How the price is calculated — per seat, per tenant, or a flat annual fee
Whether Identity and Behavioral cost extra when they ship
What a contract term looks like, monthly or annual
Whether a trial or a paid pilot on live traffic is on offer
What, if anything, annual payment saves you

That list matters, because no refund window or trial length appears anywhere on the site. Get those terms in writing before you sign.

The clearest next step is the 30-minute walkthrough on live traffic. It's a working session on your own signals, not a slide deck. Ask for a quote early in that call rather than at the end, and you'll save yourself a round trip. 🙂

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Why use Sentaro?

Most teams already own a secure email gateway. What they lack is a way to tell a real ask from a fake one before a person opens it. Sentaro runs one engine across four vectors, so a single attack chain gets caught wherever it moves.

Verdicts inside the mailbox. Recipients see the label where they read the mail, so a held message rarely turns into a help desk ticket.
Scope-level app risk, per user. Sentaro maps what every connected app can reach, and revokes consent for unapproved AI tools and forgotten integrations.
One chain, one engine. A lookalike domain, a fake CFO reply, and a consent prompt get tied together instead of filed as three separate tickets.
Hosted in Sweden, EU only. The engine runs on Microsoft Azure in Sweden, so decisions sit under EU law rather than a jurisdiction you did not choose.
Regulation-ready framing. Built for the controls DORA and NIS2 ask regulated firms to evidence, with GDPR encryption at rest on per-tenant keys and TLS 1.2+ in transit.
Proof from a peer. A Nordic fintech with 400 seats replaced its secure email gateway and phishing-simulation program, blocking 14 BEC attempts in the first month.

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Sentaro FAQ

Which email platforms does Sentaro support?

Sentaro works with Microsoft 365 and Google Workspace only, and you'll need tenant-level access. Other mail platforms aren't covered. Confirm your admin rights before booking the walkthrough.

Where is my data stored, and how is it protected?

It runs on Microsoft Azure in Sweden, under EU law. Data is encrypted at rest with per-tenant keys and TLS 1.2+ in transit. SOC 2 and ISO 27001 are in progress, so ask for the latest evidence pack.

How long does setup take, and what's involved in switching?

There's no published onboarding timeline, so book the 30-minute walkthrough on your own live traffic to gauge the admin effort. Message and app coverage are live now; identity and behavioral arrive in Q4 2026.

How does billing and cancellation work?

Sentaro publishes no price list and offers no self-serve sign-up, so request a quote covering seat count, modules, and term length. No trial length or refund window is public, so confirm those terms in writing first.