---
description: Get detailed information about Sentry Email Defense Service and how it can help you meet your business needs. Learn more about Sentry Email Defense Service price, benefits, and disadvantages for businesses in Singapore.
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 Singapore 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.com.sg/alternatives/157118/sentry-email-defence-service)

# Alternatives to Sentry Email Defense Service

Canonical: https://www.capterra.com.sg/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. **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.com.sg/software/168436/spamtitan)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/168436/sentry-email-defence-service/vs/spamtitan)
2. **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.com.sg/software/218859/trustifi)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/218859/sentry-email-defence-service/vs/trustifi)
3. **Zoho Mail** — 4.5/5 (1063 reviews) — Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
   - [View profile](https://www.capterra.com.sg/software/174694/zoho-mail)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/174694/sentry-email-defence-service/vs/zoho-mail)
4. **ALTOSPAM** — 4.8/5 (73 reviews) — SaaS software security filter : antispam, antivirus, antiphishing, antiransomwares.
   - [View profile](https://www.capterra.com.sg/software/176264/altospam)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/176264/sentry-email-defence-service/vs/altospam)
5. **Libraesva Email Security** — 4.9/5 (50 reviews) — Protect your business from disruption, financial loss and reputational damage.
   - [View profile](https://www.capterra.com.sg/software/206740/libraesva-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/206740/sentry-email-defence-service/vs/libraesva-email-security)
6. **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.com.sg/software/119826/mimecast-email-security)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/119826/157118/mimecast-email-security/vs/sentry-email-defence-service)
7. **SMTP2GO** — 4.9/5 (178 reviews) — Make email the best part of your day with SMTP2GO. We get your emails where they need to go - lightning-fast and with no detours\!
   - [View profile](https://www.capterra.com.sg/software/166646/smtp2go)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/166646/sentry-email-defence-service/vs/smtp2go)
8. **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.com.sg/software/175873/proofpoint-email-protection)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/175873/sentry-email-defence-service/vs/proofpoint-email-protection)
9. **Secure Exchanges** — 4.6/5 (12 reviews) — The easiest secure platform to exchange, retrieve or sign confidential documents (up to 2.5G), fully integrated with Outlook or Gmail.
   - [View profile](https://www.capterra.com.sg/software/1023591/secure-exchanges)
   - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/1023591/sentry-email-defence-service/vs/secure-exchanges)
10. **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.com.sg/software/168948/spamhero)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/168948/sentry-email-defence-service/vs/spamhero)
11. **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.com.sg/software/186521/security-gateway-for-email-servers)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/186521/sentry-email-defence-service/vs/security-gateway-for-email-servers)
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.com.sg/software/178083/clearnetwork)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/178083/sentry-email-defence-service/vs/clearnetwork)
13. **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.com.sg/software/219920/graphus)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/219920/sentry-email-defence-service/vs/graphus)
14. **Mail Assure** — 4.5/5 (29 reviews) — Cloud-based email security designed to help your customers stay in control while safeguarding their inbound and outbound email.
    - [View profile](https://www.capterra.com.sg/software/178413/mail-assure)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/178413/sentry-email-defence-service/vs/mail-assure)
15. **Symantec Email Security.cloud** — 4.5/5 (159 reviews) — Threat and anti-spam protection system intended to defend your email from phishing, ransomware, and business email compromise.
    - [View profile](https://www.capterra.com.sg/software/168448/email-security-cloud)
    - [Compare vs Sentry Email Defense Service](https://www.capterra.com.sg/compare/157118/168448/sentry-email-defence-service/vs/email-security-cloud)

## Related Categories

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

## Links

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