Monthly visits
18Data as of Oct 24, 2026S
Security & Privacy
Sentinel
Spot suspicious links and phishing signals while reading email
Schromewebstore.google.comNo site preview yet
What it does
- Use the extension while reading Gmail or Outlook to inspect email content and links.
- It highlights unusual requests, fake urgency, and risky domains so you can review the message before clicking.
Made for
Who is it for?
For professionals handling payments, invoices, and customer email in the browser.
Top alternatives
Compare features, prices, and free plans
| Tool | Price | What's free | Best for |
|---|---|---|---|
| SSentinel | Check site for pricing | Check the official site for details | Spot suspicious links and phishing signals while reading email |
| MMolted Email | From $19/mo | The free plan includes 3 shared-domain mailboxes, 3,000 sends per month, and 1,000 incoming emails per month. | Screen incoming email for attempts to hijack your AI agent |
| VVibe App Scanner | From $19/mo | The first scan offers a free preview with a score, issue counts and one detailed finding. Full reports require payment; the preview needs no card. | Scan live apps for exposed secrets and access-control gaps |
| BBurnLinks | From $2/mo | The free plan includes 15 secrets per month, up to 5 KB each, without attachments or API access. | Share sensitive text through links that expire after viewing |
Prices and free limits can change. Check the official site for the latest details.
The business behind the tool
What should you build next?
See what tools earn, how crowded the market is, and how long a solo build might take. Get a build, wait, or skip verdict, with lessons from successes and failures.
These are sample assessments, not final recommendations. We don't guess at missing revenue, traffic, or build times.
Monthly recurring revenue (USD)
$0Data as of Oct 24, 2026Launched
Mar 2025Data as of Oct 24, 2026Founders
Not availableData as of Oct 24, 2026Worth building? Look at the evidence
Higher is better (out of 5)Demand Estimate
Trends, anchor-relative interest, and growth are unavailable; 17 unique suggestion long tails. Demand is estimated only from suggestion count.
2/5
1/5
Room to compete
Not available
Edge over free options
Not available
Can you build it solo? Estimate
Preliminary assessment: Basic email risk alerts can be prototyped, but false-positive control, privacy handling, and webmail compatibility raise implementation requirements.
3/5
Finding customers Estimate
Preliminary assessment: Email phishing detection and suspicious link checks have clear demand keywords, making them suitable for security feature demonstrations and store-based acquisition.
4/5
Willingness to pay Estimate
Preliminary assessment: Professional users have security needs when handling payment and client emails; reducing the risk of mistaken clicks provides a motive to pay.
4/5
Higher scores mean better prospects. These are sample assessments, not investment advice.