What is Sentinel used for?

Sentinel is a Chrome extension that analyzes emails in Gmail and Outlook for phishing patterns and suspicious links and warns you before you click. It is a good fit for checking suspicious invoice or payment emails and extra protection for freelancers' inboxes.

Is Sentinel open source?

No. Sentinel is proprietary (closed-source) software. In the Security category, open-source options include uBlock Origin, Cryptomator and VeraCrypt.

What are some alternatives to Sentinel?

Sentinel competes with Malwarebytes, Norton and Bitdefender.

Sentinel: features, pricing and alternatives

About Sentinel

Sentinel is a Chrome extension that scans emails you read in the browser for phishing and scams. It looks through email text for typical phishing patterns, inspects questionable links ahead of any click, flags red flags like artificial urgency, odd requests and dubious domains, and shows a clear alert when an email may be a scam.

It works with Gmail and Outlook, runs inside the browser with no complex setup, and is meant to support rather than replace the user's judgment. The developer says it does not sell data, minimizes access and focuses on risk patterns rather than collecting personal information. Intended users include people handling payments or invoices, freelancers and remote workers.

Key features

Phishing pattern analysis of email content
Link checks before you open them
Warnings for fake urgency and risky domains
Gmail and Outlook support
Runs in the browser with no setup

Good fit for

Checking suspicious invoice or payment emails
Extra protection for freelancers' inboxes

Tags: phishing; email-security; chrome-extension; gmail; outlook; scam-detection

Sentinel: questions and answers

What is Sentinel used for?: Sentinel is a Chrome extension that analyzes emails in Gmail and Outlook for phishing patterns and suspicious links and warns you before you click. It is a good fit for checking suspicious invoice or payment emails and extra protection for freelancers' inboxes.
Is Sentinel open source?: No. Sentinel is proprietary (closed-source) software. In the Security category, open-source options include uBlock Origin, Cryptomator and VeraCrypt.
What are some alternatives to Sentinel?: Sentinel competes with Malwarebytes, Norton and Bitdefender.