Best MailBoxster Web Security Alternatives in 2026
The top MailBoxster Web Security alternatives are Google Safe Browsing, Avast Anti-Phishing and Bitdefender TrafficLight (now Bitdefender Web Sage): 15 Anti-Phishing software our editors would look at instead of MailBoxster Web Security, in our ranking order.
MailBoxster Web Security: A free Chrome extension for local page checks, with protection focused on selected threats. Where it falls short: chrome extension only; safari is listed as coming soon.
Switching from MailBoxster Web Security? For most anti-phishing software buyers the best MailBoxster Web Security alternative is Google Safe Browsing, built for free, broad protection across browsers and services.
Why People Look for a MailBoxster Web Security Alternative
- Chrome extension only; Safari is listed as coming soon
- Does not detect phishing in email
- Free access at launch is not guaranteed to remain free
- No email phishing detection — 4 of the alternatives below have it
- No threat detection dashboard — 4 of the alternatives below have it
Quick Picks by What You Need
- Best overallGoogle Safe Browsing9.4
Free, broad protection across browsers and services
Visit Google Safe Browsing - Best free optionGoogle Safe Browsing9.4
Has a free plan
Visit Google Safe Browsing - Best for email phishing detectionGoogle Safe Browsing9.4
Email phishing detection (MailBoxster Web Security: no)
Visit Google Safe Browsing
All 15 MailBoxster Web Security Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
-
Best forFree, broad protection across browsers and services
- Better than MailBoxster Web Security:
- Email phishing detection
- Editor score 9.4 vs 6.8
Free web-threat warnings across Google products, browsers and developer APIs.
- Email phishing detection
- Browser protection
- Phishing URL blocking
9.4/10★★★★★Visit site -
Best forIndividuals wanting free Chrome phishing protection
- Better than MailBoxster Web Security:
- Editor score 9.2 vs 6.8
A focused browser extension that scans URLs, blocks threats, and flags risky search results.
- Browser protection
- Phishing URL blocking
- Real-time scanning
9.2/10★★★★★Visit Avast -
Best forPeople seeking free browser-based protection
- Better than MailBoxster Web Security:
- Editor score 9.1 vs 6.8
A free Chrome and Edge extension for real-time web protection, not email security.
9.1/10★★★★★Visit Bitdefender -
Best forPeople seeking free browser-based phishing protection
- Better than MailBoxster Web Security:
- Editor score 9.0 vs 6.8
A free browser extension for real-time URL filtering and AI-assisted phishing detection.
- Browser protection
- Phishing URL blocking
- Real-time scanning
9.0/10★★★★☆Try Norton Safe Web -
Best forFree Chrome protection with credential-leak detection
- Better than MailBoxster Web Security:
- Editor score 8.9 vs 6.8
Free Chrome protection combines malicious-site warnings with credential-leak detection.
- Credential protection
- Browser protection
- Phishing URL blocking
8.9/10★★★★☆Visit Netcraft -
Best forWindows users and Microsoft-managed organizations
- Better than MailBoxster Web Security:
- Threat detection dashboard
- Editor score 8.8 vs 6.8
A free Windows and Edge safeguard for suspicious sites, downloads, and credential entry.
- Threat detection dashboard
- Credential protection
- Browser protection
8.8/10★★★★☆Visit Microsoft -
Best forFree browser protection with scam and skimmer blocking
- Better than MailBoxster Web Security:
- Editor score 8.6 vs 6.8
A free browser extension for blocking phishing, scams, skimmers, ads, and trackers.
8.6/10★★★★☆Visit Malwarebytes -
Best forFree Chrome phishing warnings and privacy controls
- Better than MailBoxster Web Security:
- Editor score 8.5 vs 6.8
A free browser extension pairing phishing warnings with practical privacy controls.
- Browser protection
- Phishing URL blocking
- Real-time scanning
8.5/10★★★★☆Visit Avast -
Best forFree phishing risk ratings in search results
- Better than MailBoxster Web Security:
- Editor score 8.4 vs 6.8
Free search-result safety ratings help flag phishing and other risky sites.
- Browser protection
- Real-time scanning
8.4/10★★★★☆Visit Norton -
Best forOrganizations needing managed DNS phishing protection
- Better than MailBoxster Web Security:
- Editor score 8.3 vs 6.8
Managed DNS protection blocks phishing and other malicious domains before connections are established.
8.3/10★★★★☆Visit DNSFilter -
Best forMid-market and enterprise security operations teams
- Better than MailBoxster Web Security:
- Email phishing detection
- Threat detection dashboard
- Editor score 8.2 vs 6.8
AI-assisted email triage and inbox-wide remediation for phishing response teams.
- Threat detection dashboard
- Email phishing detection
8.2/10★★★★☆Visit Cofense -
Best forIndividuals seeking phishing protection across devices
- Better than MailBoxster Web Security:
- Email phishing detection
- Threat detection dashboard
- Editor score 8.1 vs 6.8
Guardio combines browser protection with phishing alerts across supported devices.
- Threat detection dashboard
- Email phishing detection
- Browser protection
8.1/10★★★★☆Visit Guardio -
Best forLarge organizations needing inline web threat controls
- Better than MailBoxster Web Security:
- Threat detection dashboard
- Editor score 8.0 vs 6.8
Inline web threat controls for organizations protecting web and SaaS traffic.
- Threat detection dashboard
- Browser protection
- Phishing URL blocking
8.0/10★★★★☆Visit Zscaler -
Best forOrganizations securing inbound email and links
- Better than MailBoxster Web Security:
- Email phishing detection
- Editor score 7.9 vs 6.8
Inbound email, links and attachments get layered checks against targeted threats.
- Email phishing detection
- Phishing URL blocking
- Real-time scanning
7.9/10★★★★☆Visit Mimecast -
Best forFree DNS blocking of malicious domains
- Better than MailBoxster Web Security:
- Editor score 7.9 vs 6.8
A free encrypted DNS service that blocks lookups for known malicious domains.
7.9/10★★★★☆Visit Quad9
MailBoxster Web Security Alternatives: Common Questions
What is the best alternative to MailBoxster Web Security?
Google Safe Browsing: #1 in our Anti-Phishing Software ranking, with an editor score of 9.4 out of 10. Free web-threat warnings across Google products, browsers and developer APIs.
Is there a free alternative to MailBoxster Web Security?
Yes. Google Safe Browsing, Avast Anti-Phishing, Bitdefender TrafficLight (now Bitdefender Web Sage), Norton Safe Web and Netcraft Browser Extension have a free plan or a free tier (11 of the 15 alternatives on this page).
Why do people look for MailBoxster Web Security alternatives?
Chrome extension only; Safari is listed as coming soon; Does not detect phishing in email; Free access at launch is not guaranteed to remain free.
How do I switch from MailBoxster Web Security?
Export your data from MailBoxster Web Security (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel MailBoxster Web Security.
How to Switch from MailBoxster Web Security
- Export your data from MailBoxster Web Security (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel MailBoxster Web Security.
MailBoxster Web Security vs Each Alternative
| # | Tool | Free plan | Paid from | Phishing URL blocking | Email phishing detection | Browser protection | Score |
|---|---|---|---|---|---|---|---|
| 28 | MailBoxster Web Security | Yes | Free | Yes | No | Yes | 6.8 |
| 1 | Google Safe Browsing | Yes | Free | Yes | Yes | Yes | 9.4 |
| 2 | Avast Anti-Phishing | Yes | Free | Yes | No | Yes | 9.2 |
| 3 | Bitdefender TrafficLight (now Bitdefender Web Sage) | Yes | Free | 9.1 | |||
| 4 | Norton Safe Web | Yes | Yes | Yes | 9.0 | ||
| 5 | Netcraft Browser Extension | Yes | Free | Yes | Yes | 8.9 | |
| 6 | Microsoft Defender SmartScreen | Yes | Free | Yes | No | Yes | 8.8 |
| 7 | Malwarebytes Browser Guard | Yes | 8.6 | ||||
| 8 | Avast Online Security & Privacy | Yes | Free | Yes | Yes | 8.5 | |
| 9 | Norton Safe Search | Yes | Free | No | Yes | 8.4 | |
| 10 | DNSFilter | No | $1/unit/mo | 8.3 | |||
| 11 | Cofense Phishing Detection and Response | No | Yes | No | 8.2 | ||
| 12 | Guardio | Yes | Yes | Yes | Yes | 8.1 | |
| 13 | Zscaler Web Security | No | Yes | No | Yes | 8.0 | |
| 14 | Mimecast Targeted Threat Protection | Yes | Yes | 7.9 | |||
| 15 | Quad9 | Yes | Free | 7.9 |
Guides on Anti-Phishing Software
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update