# Sentry Email Defense Service Software Pricing, Alternatives & More 2026 | Capterra > With the help of Capterra, learn about Sentry Email Defense Service Software - reviews, pricing plans, popular comparisons to other Email Security products and more. Source: https://www.capterra.com/p/157118/Sentry-Email-Defence-Service/reviews --- # Sentry Email Defense Service Software Review 2026: Features, Reviews, Integrations, Pros & Cons Last updated on March 13, 2026 Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. Independent research methodology Capterra’s researchers use a mix of verified reviews, independent research and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology. 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[Learn more](https://www.capterra.com/resources/how-we-ensure-transparency/) [Description](#description)[Use cases](#use-cases)[Alternatives](#alternatives)[Features](#features)[Pricing](#pricing)[Support](#support)[Reviews](#reviews) Sentry Email Defense Service ## What is Sentry Email Defense Service? A cloud-based email filtering gateway protecting company from spam, virus, ransomware, DDoS and phishing links. ## What is Sentry Email Defense Service used for? [Anti-spam](https://www.capterra.com/anti-spam-software/)[Email Security](https://www.capterra.com/email-security-software/)[Secure Email Gateway](https://www.capterra.com/secure-email-gateway-software/) Top alternative Featured Overall rating Based on 1 user reviews Reviews sentiment Positive \- Neutral \- Negative \- Starting price $1 Flat Rate, Per Month Free trial available Capterra Shortlist charts the highest-rated and most popular products... Our "Best of" badge program showcases products with the highest ratings... Our "Best of" badge program showcases products with the highest ratings... Do you work for Sentry Email Defense Service?[Manage this product listing](https://digitalmarkets.gartner.com/get-listed/claim-bx?url=http://www.ttasia.com/&name=Sentry Email Defense Service) ## Compare with a popular alternative Capterra selects software alternatives based on relevant features, verified user reviews and user interactions. Placement may be influenced by client status. ### Sentry Email Defense Service 5.0 (1) VS. [4.9 (12)](https://www.capterra.com/p/178083/CLEARNETWORK/#reviews) Starting Price $1 Flat Rate, Per Month Starting Price $1.5 Per Feature, Per Month Free Trial Free Version Pricing Options Free Trial Free Version Ease Of Use 4.0 (1) Ease Of Use 4.8 (562) Value For Money 4.0 (1) Value For Money 4.8 (518) Customer Service 5.0 (1) Customer Service 4.9 (516) ## Sentry Email Defense Service alternatives [SpamTitan](https://www.capterra.com/p/168436/SpamTitan/) [4.6 (563)](https://www.capterra.com/p/168436/SpamTitan/reviews/) Starting price $1.26 Per User, Per Month Pricing Options Free Trial Free Version User Rating 93% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/168436/SpamTitan/) [Microsoft Defender for Office 365](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) [4.6 (236)](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/reviews/) Starting price Contact vendor for pricing Pricing Options Free Trial Free Version User Rating 94% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) [Truecaller](https://www.capterra.com/p/234073/Truecaller/) [4.5 (64)](https://www.capterra.com/p/234073/Truecaller/reviews/) Starting price $2.99 Per User, Per Month Pricing Options Free Trial Free Version User Rating 91% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/234073/Truecaller/) [ALTOSPAM](https://www.capterra.com/p/176264/ALTOSPAM/) [4.8 (73)](https://www.capterra.com/p/176264/ALTOSPAM/reviews/) Starting price $9.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 100% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/176264/ALTOSPAM/) ## Features Features with the highest number of reviews are displayed first. Those that have no reviews appear next, sorted alphabetically. Activity Tracking Track and document all activities across devices, networks, and other systems Anti Spam Techniques to prevent and filter unwanted or unsolicited email spam from reaching a user's inbox Anti Virus Prevents, detects and removes malware Archiving & Retention Moving and separately storing data that is not actively used or continuous storage of data for compliance purposes Authentication Verify the identity of users/devices to enable secure access Data Loss Prevention Safeguard confidential data and meet compliance regulations Sentry Email Defense Service 25 features Track and document all activities across devices, networks, and other systems Techniques to prevent and filter unwanted or unsolicited email spam from reaching a user's inbox Prevents, detects and removes malware Moving and separately storing data that is not actively used or continuous storage of data for compliance purposes Verify the identity of users/devices to enable secure access Safeguard confidential data and meet compliance regulations Ability to restore deleted, hidden, or lost data from an email server/system Manage and store data in a database Plan and implement business continuity measures in case of unforeseen events Use filters to process, organize and categorize emails to identify spam, malware and other unwanted messages Manage, store and organize emails within the system or via third-party apps Ability to oversee and optimize the operations of a mail server Route emails to multiple servers Track delivered, received, and opened emails Convert data into a code for security Find & retrieve relevant data or documents Observe and track the demand, usage, progress or quality of a system, product, or user Create, manage, and track policies and procedures within an organization Collection, analysis, and representation of numerical data and generation of reports to understand various patterns View and track pertinent metrics to find patterns and gain insights from data Filters used to determine different types of malware threats Feature in email systems that identifies suspicious or unsolicited emails and holds them in a separate folder for review or deletion Information to prevent, understand and identify cyber threats Protect incoming and outgoing communications against malware, spam, display spoofing, and other threats Control system access and/or deliverability for applications and email addresses Features 4.0 (1) 4.0 Based on 1 reviews ## Pricing Value for money 4.0 (1) Free Trial Basic $1.00 Flat Rate,Per Month Value for money 4.0 (1) 4.0 Based on 1 reviews ## Support, customer service and training options Customer Service 5.0 (1) Support - Email/Help Desk - FAQs/Forum - Knowledge Base - Phone Support - 24/7 (Live rep) - Chat Training - In Person - Live Online - Webinars - Documentation - Videos Deployment - Web - Android - iPhone/iPad Typical users - Freelancers - Small businesses - Mid size businesses - Enterprises Customer Service 5.0 (1) 5.0 Based on 1 reviews ## User reviews Overall rating 5.0 Based on 1 reviews Filter by rating 5(1) 4(0) 3(0) 2(0) 1(0) Mentioned topic Sorted by most recent ML Ming L. Accounting Manager Medical Devices ### "Excellent Protection with Exceptional Customer Support" 5.0 Overall Rating 5.0 5.0 Ease of Use 4.0 4.0 Features 4.0 4.0 Customer Service 5.0 5.0 Likelihood to Recommend 9/10 December 1, 2016 We migrate from old email system to TTAsia's Hosted Exchange with Sentry EDS protection. The migration was smooth with a dedicated engineer supporting us on 7x24 basis during the period. The spam in my mailbox dropped from 10+ a day to basically zero. Their spam quarantine report is easy to use to review, release, or whitelist quarantined emails. With a lot of malware and ransomware nowadays, I believe it is crucial for any company to put email security in the hands of email professionals. They are in the market for 15 years and was referred by my friend using them for 10 years. Although I am a mid-size SME, they still treat me like a VIP with phone, email and instant message support. The response is quick and act immediately without delay. Everything is keep track by the ticketing system with update. I love it and would highly recommended to anyone who is looking for good email solutions. Pros Excellent spam and virus filtering with superb support team. Cons None Review source Non-incentivized review: any software user can leave a review for any product listed on our site. All submitted reviews are subject to our verification process prior to publication. Independent research methodology Capterra's researchers use a mix of verified reviews, independent research and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology. [Learn more](https://www.capterra.com/resources/proprietary-data-research/) How Capterra verifies reviews Capterra carefully verified over 2.5 million+ reviews to bring you authentic software experiences from real users. Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI. [Learn more](https://www.capterra.com/resources/how-we-verify-reviews/) How Capterra ensures transparency Capterra lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. Capterra is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider's website. [Learn more](https://www.capterra.com/resources/how-we-ensure-transparency/)