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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Trellix Email Security

    Score9.9 out of 10
    Enterprise companies (1,001+ employees)
    Trellix Email Security (formerly FireEye Email Security) protects against advanced email attacks that bypass the initial gateway.

    $0

    per mailbox

    Zscaler Internet Access

    Score8.9 out of 10
    N/AZscaler Internet Access™ (ZIA) is a secure web gateway (SWG), delivering cloud native cyberthreat protection and zero trust access to the internet and SaaS apps.N/A
    Pricing
    Trellix Email SecurityZscaler Internet Access
    Editions & Modules
    Server Edition
    $0
    per mailbox
    AVAS
    $0
    per mailbox
    Cloud Edition
    $0
    per mailbox
    No answers on this topic
    Offerings
    Pricing Offerings
    Trellix Email SecurityZscaler Internet Access
    Free Trial
    YesNo
    Free/Freemium Version
    NoNo
    Premium Consulting/Integration Services
    YesYes
    Entry-level Setup FeeOptionalNo setup fee
    Additional Details——
    More Pricing Information
    Community Pulse
    Trellix Email SecurityZscaler Internet Access
    Considered Both Products
    Trellix (Musarubra US LLC)
    No answer on this topic
    Zscaler
    No answer on this topic
    Key User Insights
    Would buy again
    83%
    Would buy again
    5 Answers
    99%
    Would buy again
    284 Answers
    Delivers good value for the price
    100%
    Delivers good value for the price
    5 Answers
    98%
    Delivers good value for the price
    245 Answers
    Happy with the feature set
    100%
    Happy with the feature set
    6 Answers
    99%
    Happy with the feature set
    284 Answers
    Lived up to sales and marketing promises
    No answers on this topic
    97%
    Lived up to sales and marketing promises
    207 Answers
    Implementation went as expected
    100%
    Implementation went as expected
    5 Answers
    93%
    Implementation went as expected
    227 Answers
    Features
    Trellix Email SecurityZscaler Internet Access
    Secure Email Gateway
    Comparison of Secure Email Gateway features of Trellix Email Security and Zscaler Internet Access
    Feature
    Trellix Email Security
    8.2
    6 Ratings
    3% below category average
    Zscaler Internet Access
    -
    Ratings
    Anti-malware8.56 Ratings00 Ratings
    Customizability8.06 Ratings00 Ratings
    Threat Detection8.56 Ratings00 Ratings
    Sandboxing8.06 Ratings00 Ratings
    Management Tools8.06 Ratings00 Ratings
    Identity Management
    Comparison of Identity Management features of Trellix Email Security and Zscaler Internet Access
    Feature
    Trellix Email Security
    -
    Ratings
    Zscaler Internet Access
    5.0
    2 Ratings
    55% below category average
    Multi-Factor Authentication00 Ratings5.02 Ratings
    Endpoint Security
    Comparison of Endpoint Security features of Trellix Email Security and Zscaler Internet Access
    Feature
    Trellix Email Security
    -
    Ratings
    Zscaler Internet Access
    10.0
    2 Ratings
    11% above category average
    Endpoint Detection and Response (EDR)00 Ratings10.02 Ratings
    Threat Intelligence
    Comparison of Threat Intelligence features of Trellix Email Security and Zscaler Internet Access
    Feature
    Trellix Email Security
    -
    Ratings
    Zscaler Internet Access
    8.5
    216 Ratings
    7% above category average
    Network Analytics00 Ratings8.7217 Ratings
    Threat Recognition00 Ratings8.3214 Ratings
    Vulnerability Classification00 Ratings8.5191 Ratings
    Automated Alerts and Reporting00 Ratings8.2205 Ratings
    Threat Analysis00 Ratings8.8203 Ratings
    Threat Intelligence Reporting00 Ratings8.5199 Ratings
    Automated Threat Identification00 Ratings8.5192 Ratings
    Zero Trust Security
    Comparison of Zero Trust Security features of Trellix Email Security and Zscaler Internet Access
    Feature
    Trellix Email Security
    -
    Ratings
    Zscaler Internet Access
    8.9
    262 Ratings
    4% above category average
    Continuous Verification00 Ratings8.7245 Ratings
    Secure Web Gateways00 Ratings9.0236 Ratings
    Network Flow Control00 Ratings8.1217 Ratings
    Network Traffic Analysis00 Ratings8.8219 Ratings
    Segmentation Leveraging00 Ratings8.6194 Ratings
    Admin Access Control00 Ratings9.1230 Ratings
    Network Data Encryption00 Ratings8.8207 Ratings
    Network Topology Mapping00 Ratings10.02 Ratings
    Best Alternatives
    Trellix Email SecurityZscaler Internet Access
    Small Businesses
    Sophos Email
    Score9.1 out of 10
    No answers on this topic
    Medium-sized Companies
    Sophos Email
    Score9.1 out of 10
    No answers on this topic
    Enterprises
    Microsoft Exchange
    Score8.6 out of 10
    Forescout Vistaro Platform
    Score6.6 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Trellix Email SecurityZscaler Internet Access
    Likelihood to Recommend
    9.0
    (6 ratings)
    9.0
    (295 ratings)
    Likelihood to Renew
    -
    (0 ratings)
    8.4
    (6 ratings)
    Usability
    8.2
    (1 ratings)
    8.8
    (279 ratings)
    Availability
    -
    (0 ratings)
    7.3
    (1 ratings)
    Performance
    -
    (0 ratings)
    5.5
    (1 ratings)
    Support Rating
    7.3
    (3 ratings)
    7.1
    (10 ratings)
    Online Training
    -
    (0 ratings)
    7.3
    (1 ratings)
    Implementation Rating
    -
    (0 ratings)
    8.4
    (2 ratings)
    Configurability
    -
    (0 ratings)
    8.4
    (2 ratings)
    Product Scalability
    -
    (0 ratings)
    7.3
    (1 ratings)
    Vendor post-sale
    -
    (0 ratings)
    8.4
    (3 ratings)
    Vendor pre-sale
    -
    (0 ratings)
    7.3
    (2 ratings)
    User Testimonials
    Trellix Email SecurityZscaler Internet Access
    Likelihood to Recommend
    Trellix (Musarubra US LLC)
    It has a very good feature of URL replace, it helps us to block or prevent spam, phishing, or malicious emails. It has some limitations like if some large or lengthy emails come it takes more time to scan and to avoid delay it forwards the mail to the recipient with a warning note on it.
    Read full review
    Zscaler
    I feel the product is very good to set up basic standards and go beyond that in many aspects. However, due to being sometimes too simple, it limits the ability to do some other complex changes. Having the ability to do both would be ideal for some, if not all, of the products within Zscaler Internet Access. A simple setup to have it stand-up, and more advanced settings for those more experienced.
    Incentivized
    Read full review
    Pros
    Trellix (Musarubra US LLC)
    • Very user-friendly and simple interface.
    • Policy rules are easy to create and they work.
    • Very little downtime or operational impact.
    • Email delivery issues are easy to investigate and troubleshoot.
    Incentivized
    Read full review
    Zscaler
    • Provides a secure VPN connection point for endpoint connectivity.
    • Provides the VPN connectivity in a fast and reliable connection state.
    • Very dependable, once connected the connection stays up and there's no fuss.
    • Very good at letting you know when you are not authenticated.
    • Very easy to authenticate and regain access when your session times out.
    Incentivized
    Read full review
    Cons
    Trellix (Musarubra US LLC)
    • Sometimes feels that console running slow.
    • Riskware detection has a lot of false positive.
    • The user interface is not very intuitive.
    Incentivized
    Read full review
    Zscaler
    • ZS CLI support to turn off ZIA and ZDX service specifically on mac.
    • Better visibility into failed posture devices, including a timeline and the reason the posture failed (This is about the Zscaler mobile portal: Enrolled devices --> Failed posture devices).
    Incentivized
    Read full review
    Likelihood to Renew
    Trellix (Musarubra US LLC)
    No answers on this topic
    Zscaler
    While Zscaler Internet Access (ZIA) delivers critical value in cloud security and RBI compliance, I rate renewal likelihood 7/10 due to evolving needs versus platform limitations. Below is my rationale:
    Key Gaps:
    1. Advanced Threat Costs:
    ZIA’s add-ons (e.g., Advanced DLP, Sandboxing) incur 35%+ cost premiums – straining budgets as transaction volumes (UPI/iMobile) grow 50% YoY.
    2. API Banking Scalability:
    ZIA’s API rate limits throttle real-time policy sync during UPI peaks (10K+ TPS), forcing workarounds for finacle integrations.
    3. RBI Future-Proofing:
    Limited native support for upcoming digital rupee (CBDC) security rules requires custom development, increasing compliance overhead.
    Incentivized
    Read full review
    Usability
    Trellix (Musarubra US LLC)
    FireEye Email Security is the most effective email security solution for protecting enterprises from APT. It is not complicated to set up and you can ride a wave of continuous security effects for a long time without major changes after the initial setup. It's automated, so users don't have to care too much about it. In addition, it provides detailed analysis data, so you can utilize it for 3rd party solutions if you want.
    Incentivized
    Read full review
    Zscaler
    Getting started was pretty straightforward. We can tell the product is way more robust than we are using it. It started as a replacement for previous DNS-blocking content filtering, but we're exploring how this will add value with an upcoming DLP redesign and with traffic optimization at some of our remote sites with severe bandwidth limits.
    Incentivized
    Read full review
    Performance
    Trellix (Musarubra US LLC)
    No answers on this topic
    Zscaler
    There are often performance issues reported
    Incentivized
    Read full review
    Support Rating
    Trellix (Musarubra US LLC)
    The reason that I gave the support a 5 is that I have had both positive and negative experiences. One of the positive experiences was when a senior support engineer spend quite a few hours with me solving an issue that we were having. One of the negative ones was when we were experiencing an issue and one person from support gave one solution, and when the issue reoccurred we were told by another person that what was recommended to us the first time was incorrect. The issue was never fully solved.
    Incentivized
    Read full review
    Zscaler
    Zscaler's ZIA support is quick and knowledgable. They respond within 1-2 hours of you submitting your ticket. They are very thorough and are typically ready to jump on a live troubleshooting session. Our ZIA platform and how we use is it unique so at times tickets can be open for weeks but we alway get quality support compared to other unrelated product support in our enterprise
    Incentivized
    Read full review
    Implementation Rating
    Trellix (Musarubra US LLC)
    No answers on this topic
    Zscaler
    good the engineer give excellent support and eplanation
    Incentivized
    Read full review
    Alternatives Considered
    Trellix (Musarubra US LLC)
    It was called Barracuda Spam Filter when we evaluated and switched to FireEye ES (called FireEye ETP at the time). At the time we compared them ES was much better at security and also spam filtering. ES has continued to get even better since we first chose them. The user interface, support, sales/engineer provided service, the effectiveness of the product, and continued improvement/development have made them a great choice.
    Incentivized
    Read full review
    Zscaler
    The overall user community and scope of supportability outweighed the others on our short list. Netskope was a close second, but the risk, though small, was greater than that of bringing Zscaler aboard. We were looking for a mature, well-supported, highly functional, and fine-grained solution that met all our user and information security requirements.
    Incentivized
    Read full review
    Return on Investment
    Trellix (Musarubra US LLC)
    • It can reduce the spam, malicious and phishing mails.
    • It has advanced threat intelligence.
    • It gives some false positives as well.
    • It has great decision making intelligence.
    Read full review
    Zscaler
    • I would say it has a very good ROI, as whenever someone can't access something, they submit a ticket to our network engineer, and within minutes, the site is safely added to ZIA with best-practice configurations. After seeing a little of the UI from the Zenith event, it seems very user-friendly to control these policies.
    Incentivized
    Read full review
    ScreenShots

    Zscaler Internet Access Screenshots

    Screenshot of an overview of Zscaler Internet Access (ZIA), a cloud native security service edge (SSE) solution that builds on a decade of secure web gateway leadership. Offered as a scalable SaaS platform through Zscaler's security cloud, it replaces legacy network security solutions, preventing advanced attacks and data loss with a comprehensive zero trust approach. ZIA is integrated into the Zscaler Zero Trust Exchange™ to provide superior defense-in-depth, secure connectivity, end user experience, and administrative visibility and control.