---
description: If you're in a hunt for the best solution for your business, learn what Sentry Email Defense Service has to offer thanks to GetApp Singapore. We provide the most detailed information on pricing, benefits, and disadvantages of software.
image: https://gdm-localsites-assets-gfprod.imgix.net/images/getapp/og_logo-94fd2a03a6c7a0e54fc0c9e21a1c0ce9.png
title: Sentry Email Defense Service Price, Reviews & Ratings | GetApp Singapore 2026
---

Breadcrumb: [Home](/) > [Email Security Gateway Software](/directory/3801/secure-email-gateway/software) > [Sentry Email Defense Service](/software/2047893/sentry-email-defence-service) > [Sentry Email Defense Service Alternatives](https://www.getapp.sg/alternatives/2047893/sentry-email-defence-service)

# Alternatives to Sentry Email Defense Service

Canonical: https://www.getapp.sg/alternatives/2047893/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. **Microsoft Defender for Office 365** — 4.6/5 (241 reviews) — Cloud-based email security and threat management software
   - [View profile](https://www.getapp.sg/software/2054932/microsoft-defender-for-office-365)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2054932/sentry-email-defence-service/vs/microsoft-defender-for-office-365)
2. **Hoxhunt** — 4.9/5 (338 reviews) — Make security training engaging, personalized, and effective
   - [View profile](https://www.getapp.sg/software/2049696/hoxhunt)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2049696/sentry-email-defence-service/vs/hoxhunt)
3. **SpamTitan** — 4.6/5 (563 reviews) — Anti-spam filter for business email. Vital email security.
   - [View profile](https://www.getapp.sg/software/111357/spamtitan)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/111357/2047893/spamtitan/vs/sentry-email-defence-service)
4. **Trustifi** — 5.0/5 (20 reviews) — Protect Your Business Emails with AI-Powered Security
   - [View profile](https://www.getapp.sg/software/2045015/trustifi)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2045015/2047893/trustifi/vs/sentry-email-defence-service)
5. **Proton Mail** — 4.5/5 (122 reviews) — Web-based email management platform
   - [View profile](https://www.getapp.sg/software/2050156/protonmail)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2050156/sentry-email-defence-service/vs/protonmail)
6. **Libraesva Email Security** — 4.9/5 (50 reviews) — Exceptional Email Security
   - [View profile](https://www.getapp.sg/software/2055001/libraesva-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2055001/sentry-email-defence-service/vs/libraesva-email-security)
7. **MimeCast Email Security** — 4.3/5 (80 reviews) — Cloud-based email security and threat intelligence platform
   - [View profile](https://www.getapp.sg/software/2047906/mimecast-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2047906/sentry-email-defence-service/vs/mimecast-email-security)
8. **ESET Endpoint Security** — 4.7/5 (1170 reviews) — Network security, network monitoring \& endpoint protection
   - [View profile](https://www.getapp.sg/software/119799/eset-endpoint-security)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/119799/2047893/eset-endpoint-security/vs/sentry-email-defence-service)
9. **Proofpoint Core Email Protection** — 4.2/5 (45 reviews) — Secure email gateway management and threat intelligence tool
   - [View profile](https://www.getapp.sg/software/2047900/proofpoint-email-protection)
   - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2047900/sentry-email-defence-service/vs/proofpoint-email-protection)
10. **ContentCatcher** — 4.9/5 (12 reviews) — Cloud-based email security, phishing protection \& anti-spam
    - [View profile](https://www.getapp.sg/software/116963/contentcatcher)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/116963/2047893/contentcatcher/vs/sentry-email-defence-service)
11. **SpamHero** — 4.5/5 (15 reviews) — Saving the world from spam, one domain at a time\!
    - [View profile](https://www.getapp.sg/software/2054562/spamhero)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2054562/sentry-email-defence-service/vs/spamhero)
12. **Security Gateway by MDaemon** — 4.9/5 (15 reviews) — Powerful yet flexible email security software.
    - [View profile](https://www.getapp.sg/software/2046580/security-gateway-by-mdaemon)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2046580/2047893/security-gateway-by-mdaemon/vs/sentry-email-defence-service)
13. **Graphus** — 4.3/5 (27 reviews) — Cloud-based email security software
    - [View profile](https://www.getapp.sg/software/2054894/graphus)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2054894/sentry-email-defence-service/vs/graphus)
14. **Abnormal AI** — 5.0/5 (2 reviews) — A Fundamentally Different Approach to Email Security
    - [View profile](https://www.getapp.sg/software/2054809/abnormal-security)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2054809/sentry-email-defence-service/vs/abnormal-security)
15. **Mail Assure** — 4.5/5 (29 reviews) — Email, Secured.
    - [View profile](https://www.getapp.sg/software/113771/solarwinds-mail-assure)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/113771/2047893/solarwinds-mail-assure/vs/sentry-email-defence-service)
16. **Zerospam** — 4.8/5 (135 reviews) — Cloud email security \& anti-spam solution
    - [View profile](https://www.getapp.sg/software/113483/zerospam)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/113483/2047893/zerospam/vs/sentry-email-defence-service)
17. **Symantec Email Security.cloud** — 4.5/5 (159 reviews) — Anti-spam and email security software
    - [View profile](https://www.getapp.sg/software/2053776/email-security-cloud)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2053776/sentry-email-defence-service/vs/email-security-cloud)
18. **Cisco Secure Email** — 4.6/5 (25 reviews) — Cloud-based email security tool for preventing cyberattacks
    - [View profile](https://www.getapp.sg/software/2047907/cisco-secure-email)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2047907/sentry-email-defence-service/vs/cisco-secure-email)
19. **ALTOSPAM** — 4.8/5 (73 reviews) — Effectively protect all your company's emails
    - [View profile](https://www.getapp.sg/software/2049455/altospam)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2049455/sentry-email-defence-service/vs/altospam)
20. **iQ.Suite aaS** (0 reviews) — Enterprise email management \& security solution for M365
    - [View profile](https://www.getapp.sg/software/2062681/iq-suite-aas)
    - [Compare vs Sentry Email Defense Service](https://www.getapp.sg/compare/2047893/2062681/sentry-email-defence-service/vs/iq-suite-aas)

## Related Categories

- [Email Security Gateway Software](https://www.getapp.sg/directory/3801/secure-email-gateway/software)
- [Anti-Spam Software](https://www.getapp.sg/directory/1019/anti-spam/software)
- [Email Security Software](https://www.getapp.sg/directory/475/email-security/software)

## Links

- [View on GetApp](https://www.getapp.sg/alternatives/2047893/sentry-email-defence-service)
- [View Product Profile](https://www.getapp.sg/software/2047893/sentry-email-defence-service)

## This page is available in the following languages

| Locale | URL |
| en | <https://www.getapp.com/security-software/a/sentry-email-defence-service/alternatives/> |
| en-AE | <https://www.getapp.ae/alternatives/2047893/sentry-email-defence-service> |
| en-AU | <https://www.getapp.com.au/alternatives/2047893/sentry-email-defence-service> |
| en-CA | <https://www.getapp.ca/alternatives/2047893/sentry-email-defence-service> |
| en-GB | <https://www.getapp.co.uk/alternatives/2047893/sentry-email-defence-service> |
| en-IE | <https://www.getapp.ie/alternatives/2047893/sentry-email-defence-service> |
| en-NZ | <https://www.getapp.co.nz/alternatives/2047893/sentry-email-defence-service> |
| en-SG | <https://www.getapp.sg/alternatives/2047893/sentry-email-defence-service> |
| en-ZA | <https://www.getapp.za.com/alternatives/2047893/sentry-email-defence-service> |

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