---
description: Discover the benefits and disadvantages of Sentry Email Defense Service.  Learn the software price, see the description, and read the most helpful reviews for UK business users. 
image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress
title: Sentry Email Defense Service Pricing, Cost & Reviews - Capterra UK 2026
---

Breadcrumb: [Home](/) > [Anti-spam Software](/directory/30996/anti-spam/software) > [Sentry Email Defense Service](/software/157118/sentry-email-defence-service) > [Sentry Email Defense Service Alternatives ](https://www.capterra.co.uk/alternatives/157118/sentry-email-defence-service)

# Alternatives to Sentry Email Defense Service

Canonical: https://www.capterra.co.uk/alternatives/157118/sentry-email-defence-service

> Explore the top alternatives to Sentry Email Defense Service. Compare features, ratings, and reviews to find the best software for your needs.

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## Top Alternatives

1. **Trustifi** — 5.0/5 (20 reviews) — Email security solution that helps manage threat detection, regulatory compliance, data encryption, whitelisting/blacklisting, \& more.
   - [View profile](https://www.capterra.co.uk/software/218859/trustifi)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/218859/sentry-email-defence-service/vs/trustifi)
2. **Microsoft Defender for Office 365** — 4.6/5 (240 reviews) — Microsoft Defender for Office 365 protects all of Office 365 against advanced threats.
   - [View profile](https://www.capterra.co.uk/software/219685/microsoft-defender-for-office-365)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/219685/sentry-email-defence-service/vs/microsoft-defender-for-office-365)
3. **Hoxhunt** — 4.9/5 (338 reviews) — Hoxhunt automatically assigns quick, gamified training that dramatically increases engagement and builds long-term security behaviors.
   - [View profile](https://www.capterra.co.uk/software/1015704/hoxhunt)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/1015704/sentry-email-defence-service/vs/hoxhunt)
4. **SpamTitan** — 4.6/5 (563 reviews) — SpamTitan is a cloud based Anti Spam email filter. It is an easy to use, effective, multi-award winning Anti-Spam, malware blocking and
   - [View profile](https://www.capterra.co.uk/software/168436/spamtitan)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/168436/sentry-email-defence-service/vs/spamtitan)
5. **Suped** — 5.0/5 (21 reviews) — DMARC tool that helps businesses fix email deliverability issues flatten SPF, monitor blocklist \& protect the system against spoofing.
   - [View profile](https://www.capterra.co.uk/software/1094400/Suped)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/1094400/sentry-email-defence-service/vs/Suped)
6. **Proton Mail** — 4.5/5 (122 reviews) — ProtonMail is the world's largest secure email provider. We protect the data and communications of millions of organizations.
   - [View profile](https://www.capterra.co.uk/software/201276/protonmail)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/201276/sentry-email-defence-service/vs/protonmail)
7. **Libraesva Email Security** — 4.9/5 (50 reviews) — Protect your business from disruption, financial loss and reputational damage.
   - [View profile](https://www.capterra.co.uk/software/206740/libraesva-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/206740/sentry-email-defence-service/vs/libraesva-email-security)
8. **ESET Endpoint Security** — 4.7/5 (1169 reviews) — Multilayered technology, machine learning, and human expertise combined with automated security management.
   - [View profile](https://www.capterra.co.uk/software/151915/eset-endpoint-security)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/151915/157118/eset-endpoint-security/vs/sentry-email-defence-service)
9. **MimeCast Email Security** — 4.3/5 (80 reviews) — Protect emails by mitigating risk and utilizing email encryption and threat protection
   - [View profile](https://www.capterra.co.uk/software/119826/mimecast-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/119826/157118/mimecast-email-security/vs/sentry-email-defence-service)
10. **Proofpoint Email Protection** — 4.2/5 (45 reviews) — Email security management solution that helps detect \& block threats through various tools like firewalls, SCSS \& more.
    - [View profile](https://www.capterra.co.uk/software/175873/proofpoint-email-protection)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/175873/sentry-email-defence-service/vs/proofpoint-email-protection)
11. **SpamHero** — 4.5/5 (15 reviews) — Best cloud-based spam filter. Unlimited users for a low flat rate. Be spam-free in 5 minutes\! Free 30 day trial. No CC required.
    - [View profile](https://www.capterra.co.uk/software/168948/spamhero)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/168948/sentry-email-defence-service/vs/spamhero)
12. **ContentCatcher** — 4.9/5 (12 reviews) — Malicious email is a major threat. ContentCatcher protects your organization from phishing, spam, ransomware, URLs, attachments \& more.
    - [View profile](https://www.capterra.co.uk/software/178083/clearnetwork)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/178083/sentry-email-defence-service/vs/clearnetwork)
13. **Security Gateway by MDaemon** — 4.9/5 (15 reviews) — Security Gateway protects inbound \& outbound messages on ALL email platforms with the latest threat detection tech \& enforcement rules.
    - [View profile](https://www.capterra.co.uk/software/186521/security-gateway-for-email-servers)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/186521/sentry-email-defence-service/vs/security-gateway-for-email-servers)
14. **Graphus** — 4.3/5 (27 reviews) — Graphus is an AI-powered cloud email security and anti- phishing solution that provides 3 layers of defense for MS365 \& GSuite users.
    - [View profile](https://www.capterra.co.uk/software/219920/graphus)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/219920/sentry-email-defence-service/vs/graphus)
15. **Abnormal AI** — 5.0/5 (2 reviews) — The cloud-native email security company that protects 100% of employees at 5%, and growing, of the Fortune 1000.
    - [View profile](https://www.capterra.co.uk/software/1013229/abnormal-security)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.co.uk/compare/157118/1013229/sentry-email-defence-service/vs/abnormal-security)

## Related Categories

- [Anti-spam Software](https://www.capterra.co.uk/directory/30996/anti-spam/software)
- [Email Security Software](https://www.capterra.co.uk/directory/31358/email-security/software)
- [Secure Email Gateway Software](https://www.capterra.co.uk/directory/32955/secure-email-gateway/software)

## Links

- [View on Capterra](https://www.capterra.co.uk/alternatives/157118/sentry-email-defence-service)
- [View Product Profile](https://www.capterra.co.uk/software/157118/sentry-email-defence-service)

## This page is available in the following languages

| Locale | URL |
| en | <https://www.capterra.com/p/157118/Sentry-Email-Defence-Service/alternatives/> |
| en-AE | <https://www.capterra.ae/alternatives/157118/sentry-email-defence-service> |
| en-AU | <https://www.capterra.com.au/alternatives/157118/sentry-email-defence-service> |
| en-CA | <https://www.capterra.ca/alternatives/157118/sentry-email-defence-service> |
| en-GB | <https://www.capterra.co.uk/alternatives/157118/sentry-email-defence-service> |
| en-IE | <https://www.capterra.ie/alternatives/157118/sentry-email-defence-service> |
| en-IL | <https://www.capterra.co.il/alternatives/157118/sentry-email-defence-service> |
| en-IN | <https://www.capterra.in/alternatives/157118/sentry-email-defence-service> |
| en-NZ | <https://www.capterra.co.nz/alternatives/157118/sentry-email-defence-service> |
| en-SG | <https://www.capterra.com.sg/alternatives/157118/sentry-email-defence-service> |
| en-ZA | <https://www.capterra.co.za/alternatives/157118/sentry-email-defence-service> |

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