# Best Cloud Email Security Solutions - Page 4

*By [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)*


Cloud email security solutions are secure email platforms used to prevent phishing scams that trick users into divulging privileged information. The platforms, hosted by the cloud email security vendor, also ensure emails containing links to malicious sites or trigger malware downloads are blocked before reaching the end user. Businesses use cloud email security solutions to prevent data loss and the release of privileges or credentials, and increase endpoint security by blocking malware and other web-based threats.

These tools emerged as portions of the [secure email gateway](https://www.g2.com/categories/secure-email-gateway) market have adapted to the digital transformation and reduced the need for on-premise email security tools and appliances. There is some overlap between cloud email security tools and [email anti-spam software](https://www.g2.com/categories/email-anti-spam) and [email encryption software](https://www.g2.com/categories/email-encryption), but those tools typically serve one single purpose and may be delivered in both cloud and on-premise forms.

To qualify for inclusion in the Cloud Email Security category, a product must:

- Provide cloud-hosted email services
- Filter fraudulent emails and phishing scams
- Prevent and detect spam and other malicious email content





## Top Cloud Email Security Solutions at a Glance
| # | Product | Rating | Best For | What Users Say |
|---|---------|--------|----------|----------------|
| 1 | [Acronis Cyber Protect Cloud](https://www.g2.com/products/acronis-cyber-protect-cloud/reviews) | 4.7/5.0 (1,357 reviews) | Consolidated email threat defense with unified backup | "[All-in-One Protection and Backup with Fast Recovery](https://www.g2.com/survey_responses/acronis-cyber-protect-cloud-review-13042962)" |
| 2 | [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) | 4.6/5.0 (589 reviews) | Pre- and post-delivery phishing remediation with TAP/TRAP | "[Robust Email Security with Some Rule Management Hurdles](https://www.g2.com/survey_responses/proofpoint-core-email-protection-review-12792121)" |
| 3 | [Check Point Email Security](https://www.g2.com/products/check-point-email-security/reviews) | 4.6/5.0 (487 reviews) | API-native phishing prevention across Microsoft 365 collaboration | "[Accuracy Redefined, Perfect for Email Security](https://www.g2.com/survey_responses/check-point-email-security-review-12713186)" |
| 4 | [Barracuda Email Protection](https://www.g2.com/products/barracuda-barracuda-email-protection/reviews) | 4.4/5.0 (103 reviews) | M365-integrated phishing defense with incident response | "[Reliable Email Protection That Keeps Threats Out Effortlessly](https://www.g2.com/survey_responses/barracuda-email-protection-review-12082510)" |
| 5 | [Paubox](https://www.g2.com/products/paubox/reviews) | 4.9/5.0 (579 reviews) | Portal-free HIPAA email encryption for healthcare | "[Effortless Automatic Email Encryption with Excellent Paubox Support](https://www.g2.com/survey_responses/paubox-review-12903747)" |
| 6 | [Coro Cybersecurity](https://www.g2.com/products/coro-cybersecurity/reviews) | 4.7/5.0 (231 reviews) | M365-native phishing and spam remediation | "[Intuitive Security with Stellar Support and Seamless Setup](https://www.g2.com/survey_responses/coro-cybersecurity-review-9385587)" |
| 7 | [Abnormal AI](https://www.g2.com/products/abnormal-ai/reviews) | 4.8/5.0 (73 reviews) | API-native BEC and account-takeover detection | "[Flawless Protection with Insightful Reporting](https://www.g2.com/survey_responses/abnormal-ai-review-12811299)" |
| 8 | [Guardz](https://www.g2.com/products/guardz/reviews) | 4.6/5.0 (117 reviews) | M365/Google-native email threat consolidation for MSPs | "[Guardz: Unified, Proactive Security with Easy Microsoft 365 Integration](https://www.g2.com/survey_responses/guardz-review-13054191)" |
| 9 | [Microsoft Defender for Office 365](https://www.g2.com/products/microsoft-microsoft-defender-for-office-365/reviews) | 4.5/5.0 (282 reviews) | Microsoft 365-native email threat investigation | "[Effective Email Security with Excellent Microsoft 365 Integration](https://www.g2.com/survey_responses/microsoft-defender-for-office-365-review-12933331)" |
| 10 | [Mimecast Advanced Email Security](https://www.g2.com/products/mimecast-advanced-email-security/reviews) | 4.4/5.0 (314 reviews) | M365-integrated phishing and impersonation defense | "[Effective Email Security with Room for Configuration Improvement](https://www.g2.com/survey_responses/mimecast-advanced-email-security-review-10827065)" |

---
## What Are the Most Common Questions About Cloud Email Security Solutions?
*AI-generated · Last updated: May 26, 2026*
### Which is the best cloud email security platform for enterprises?
Based on G2 reviews, [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) stands out for enterprise cloud email security because reviewers repeatedly describe it as a strong first line of defense against phishing, malicious attachments, business email compromise, and large-scale email attacks. According to verified users, it is especially valued for flexible policy control, detailed threat visibility, and protection that works well in complex organizations with multiple business units. G2 reviewers mention that it helps reduce manual effort for security and help desk teams, while giving administrators better visibility into quarantined or suspicious mail. Reviewers also note some tradeoffs, including occasional complexity in rule management and support response times.

**Here are some of the top-rated products on G2:**

- [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) – often used by larger organizations for phishing defense, attachment protection, and flexible policy management
- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – frequently praised for accurate phishing detection, Microsoft 365 integration, and collaboration app protection
- [Barracuda Email Protection](https://www.g2.com/products/barracuda-barracuda-email-protection/reviews) – commonly chosen for easy administration, phishing blocking, and incident response workflows


### What top-rated platforms for cloud-based email encryption?
Based on G2 reviews, buyers looking for cloud-based email encryption often prioritize products that secure messages without adding friction for senders or recipients. According to verified users, Paubox is frequently praised for seamless encrypted email workflows that avoid portals and extra passwords, which is especially valuable in healthcare and other privacy-sensitive settings. G2 reviewers also mention Barracuda Email Protection for secure and encrypted email exchange, particularly when sensitive information needs to be shared externally. Reviews further highlight products that combine encryption with broader email protection, helping teams secure communications while reducing spam, phishing, and impersonation risk. Ease of setup, smooth integration with existing email, and strong support appear consistently important in reviewer feedback.


### Which cloud email security tool offers AI-powered filtering?
Based on G2 reviews, [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) is a strong option for buyers looking for AI-powered filtering. According to verified users, reviewers highlight its AI-driven detection for phishing, business email compromise, spam, and malicious links, especially in Microsoft 365 and Google Workspace environments. G2 reviewers mention that the product helps reduce manual review work by automatically identifying suspicious emails, while also supporting post-delivery protection and broader collaboration security. Reviewers frequently describe setup as quick through API-based deployment and praise the platform for giving security teams clear visibility into flagged messages. Some users also note that alert volume and false positives can require tuning, especially in larger environments.


### What top tools for blocking phishing and spam in cloud email?
Based on G2 reviews, the strongest tools for blocking phishing and spam in cloud email are the ones buyers repeatedly describe as dependable in day-to-day filtering without creating too much administrative burden. According to verified users, Proofpoint Core Email Protection is often cited for stopping phishing, malicious attachments, and spoofing attempts before they reach users. G2 reviewers also mention Check Point Harmony Email & Collaboration for accurate detection and reduced manual checking, especially in Microsoft 365 environments. Barracuda Email Protection appears frequently in reviews for blocking spam, phishing, and impersonation while giving IT teams easy quarantine and incident response workflows. Across these products, reviewers consistently emphasize threat visibility, simple setup, and reduced inbox clutter.

**Here are some of the top-rated products on G2:**

- [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) – commonly used to block phishing, malicious attachments, and unwanted bulk email at scale
- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – praised for catching phishing, spam, and account takeover attempts with low disruption
- [Barracuda Email Protection](https://www.g2.com/products/barracuda-barracuda-email-protection/reviews) – valued for reducing spam and phishing while simplifying quarantine review and response


### What best platforms for securing Office 365 and Google Workspace email?
Based on G2 reviews, buyers securing Office 365 and Google Workspace email often focus on products with native integration, fast deployment, and strong phishing protection. According to verified users, Check Point Harmony Email & Collaboration is frequently praised for API-based integration with both Microsoft 365 and Google Workspace, helping teams add protection without changing mail flow. G2 reviewers also mention IRONSCALES for easy integration with those same cloud email platforms, along with centralized management and phishing response capabilities. Paubox appears in reviews as a strong fit where secure communication and seamless email use are critical, especially for organizations that want encryption features to work within existing email. Reviewers consistently value products that simplify setup while improving threat visibility.

**Here are some of the top-rated products on G2:**

- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – often selected for Microsoft 365 and Google Workspace protection with API-based deployment
- [IRONSCALES](https://www.g2.com/products/ironscales/reviews) – used for Google Workspace and Microsoft 365 email security with centralized investigation and phishing defense
- [Paubox](https://www.g2.com/products/paubox/reviews) – favored for secure email workflows that integrate with existing email environments and protect sensitive communication


### What best tools for preventing business email compromise (BEC)?
Based on G2 reviews, buyers evaluating tools for preventing business email compromise often look for strong impersonation detection, behavioral analysis, and fast remediation. According to verified users, Abnormal AI is frequently highlighted for identifying account takeover, vendor fraud, and sophisticated phishing attempts that traditional filters miss. G2 reviewers also mention Proofpoint Core Email Protection for business email compromise defense through attachment protection, customizable policies, and flexible threat controls. Check Point Harmony Email & Collaboration appears in reviews as a strong option for blocking phishing, account takeover, and malicious email activity before it reaches users. Across these products, reviewers consistently emphasize reduced manual investigation, clearer threat visibility, and stronger protection against executive and vendor impersonation attempts.

**Here are some of the top-rated products on G2:**

- [Abnormal AI](https://www.g2.com/products/abnormal-ai/reviews) – widely used to detect BEC, vendor fraud, account takeovers, and advanced phishing with minimal administration
- [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) – often chosen for phishing and BEC defense with detailed visibility and flexible policy controls
- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – valued for stopping account takeover, phishing, and impersonation across email and collaboration platforms


### Which solution integrates cloud email security with DLP?
Based on G2 reviews, [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) is a strong fit for teams that want cloud email security combined with DLP-related capabilities. According to verified users, reviewers call out its DLP engine, compliance support, and visibility into how files and messages move across email and collaboration tools. G2 reviewers mention that it helps protect against phishing, account takeovers, and data leaks while giving security teams centralized insight into suspicious behavior. Reviews also highlight policy flexibility, click-time protection, and broader support for cloud apps beyond email. Some users note that deeper customization and alert tuning may take time, but the combination of security coverage and data protection is a recurring strength.


### Which cloud email security software offers mobile compatibility?
Based on G2 reviews, products in this category generally focus more on cloud email integration and mailbox protection than on dedicated mobile-specific security workflows. According to verified users, several reviews mention compatibility with Microsoft 365, Google Workspace, Outlook, Teams, and browser-based administration, which can support teams working across devices. G2 reviewers mention Barracuda Email Protection and Proofpoint Core Email Protection as easy to manage and well integrated with common cloud email environments, while Paubox is praised for making secure communication simple through existing email clients. However, the recent reviews provided do not consistently describe mobile compatibility in enough detail to support a stronger product-level conclusion, so buyers should validate mobile-specific requirements during evaluation.


### What top platforms for compliance-focused email security?
Based on G2 reviews, compliance-focused buyers often favor platforms that combine strong protection with easier policy management, encryption, or audit support. According to verified users, Paubox is repeatedly praised for helping healthcare and therapy practices support HIPAA-compliant communication without forcing clients into portals or extra passwords. G2 reviewers also mention Acronis Cyber Protect Cloud for its integrated, compliance-first positioning alongside backup and cyber protection needs. Check Point Harmony Email & Collaboration appears in reviews for organizations that value compliance support, visibility, and DLP-related controls across email and collaboration apps. Across these products, reviewers consistently highlight secure communications, reduced management complexity, and better support for privacy-sensitive or regulated workflows.

**Here are some of the top-rated products on G2:**

- [Paubox](https://www.g2.com/products/paubox/reviews) – frequently used for HIPAA-compliant email communication with seamless encrypted workflows
- [Acronis Cyber Protect Cloud](https://www.g2.com/products/acronis-cyber-protect-cloud/reviews) – highlighted for integrated protection and compliance-focused platform management
- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – chosen for DLP-related controls, compliance support, and cloud email security visibility


### What best software for real-time email threat detection?
Based on G2 reviews, buyers looking for real-time email threat detection usually prefer products that can flag, remediate, or quarantine suspicious emails quickly while reducing manual work. According to verified users, Abnormal AI is often praised for fast detection of phishing, account takeovers, vendor fraud, and suspicious login activity, along with easy setup and low administration overhead. G2 reviewers also mention Proofpoint Core Email Protection for detailed threat information and effective quarantine workflows, plus Check Point Harmony Email & Collaboration for continuous examination of URLs and post-delivery removal of harmful emails. Reviewers consistently value products that surface actionable alerts quickly, reduce investigation time, and help security teams respond before threats spread across users.

**Here are some of the top-rated products on G2:**

- [Abnormal AI](https://www.g2.com/products/abnormal-ai/reviews) – recognized for fast detection of phishing, account takeovers, vendor fraud, and suspicious account activity
- [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) – known for real-time threat visibility, quarantine workflows, and detailed remediation insight
- [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) – used for continuous URL analysis, post-delivery remediation, and real-time phishing defense




## How Many Cloud Email Security Solutions Products Does G2 Track?
**Total Products under this Category:** 85

### Category Stats (Jul 2026)
- **Average Rating**: 4.51/5 (↓0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product**: Mailinblack (+0.73%) - Among all products in this category, Mailinblack recorded the largest rating increase compared to last month
*Last updated: July 02, 2026*


## How Does G2 Rank Cloud Email Security Solutions Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 7,000+ Authentic Reviews
- 85+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.


## Which Cloud Email Security Solutions Is Best for Your Use Case?

- **Leader:** [Acronis Cyber Protect Cloud](https://www.g2.com/products/acronis-cyber-protect-cloud/reviews)
- **Highest Performer:** [Libraesva Email Security](https://www.g2.com/products/libraesva-email-security/reviews)
- **Easiest to Use:** [Paubox](https://www.g2.com/products/paubox/reviews)
- **Top Trending:** [Sublime Email Security Platform](https://www.g2.com/products/sublime-email-security-platform/reviews)
- **Best Free Software:** [Paubox](https://www.g2.com/products/paubox/reviews)


---

**Sponsored**

### Proofpoint Core Email Protection

Proofpoint’s Core Email Protection (CEP) stops 99.99% of all email threats before they become compromises. It stops the broadest range of email cyberattacks, spam and graymail. For security analysts, it provides integrated search and alert-based workflows, automatically remediates user reported emails, and coaches users in-the-moment. Core Email Protection leverages Nexus language models, relationship graphs, machine learning and computer vision to stop advanced email threats. It’s powered by unparallelled email threat data from over 3 trillion emails scanned per year, to automatically stop threats like BEC, account takeovers, QR code phishing, impersonations, and lateral phishing. Customers choose how to deploy Core Email Protection, with SEG and API options available. SEG provides the highest security via defense in depth, with pre-delivery, post-delivery, and click time protection. API is a faster deployment, and augments M365 with the same detection engine to block threats, spam, and graymail.



[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=paid_promo&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1833&secure%5Bchosen_at%5D=2026-07-02T20%3A05%3A41Z&secure%5Bmedium%5D=sponsored&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=30562&secure%5Bresource_id%5D=1833&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fcloud-email-security&secure%5Btoken%5D=9f0ea6ea838b796a041e9b84841ac9fd6332508490f0af7e3c08d4bb19b34e47&secure%5Burl%5D=https%3A%2F%2Fwww.proofpoint.com%2Fus%2Fproducts%2Femail-protection&secure%5Burl_type%5D=paid_promos)

---

## What Are the Top-Rated Cloud Email Security Solutions Products in 2026?
### 1. [Group-IB Business Email Protection](https://www.g2.com/products/group-ib-business-email-protection/reviews)
Group-IB Business Email Protection (BEP) solution offers comprehensive protection against both inbound and outbound email risks through: Detailed analysis As an essential component of the Managed XDR solution, Business Email Protection is enriched with unified visibility of users and cumulative email threats and streamlines the incident response process. Evolved detection BEP functionality inspects different format attachments to ensure they are safe and secure. The solution enables automatic detection and blocking of scams, phishing, malicious attachments, and BEC (business email compromise). Anti-spam filtering As a part of its functionality of dynamic email analysis – texts, URLs and attachments, BEP is able to implement anti-evasion techniques to detect attacks in real-time and to extract deep indicators. Users can also specify unwanted emails manually if they have all the required details for this setting. Detonation Email attachment analysis through BEP – as a part of the XDR platform, offers functionality to open links and files inside a virtual (sandbox) environment. Virtual machines emulate user activity to force malicious code detonation and perform malware analysis. Attribution Attack attribution is an integral part of building tactics for information defense. Due to the threat intelligence libraries, each attack is assigned a malware family and threat actor tags. This further helps detect similar attacks faster and builds protection based on the possibility that one or another type of attack may occur in the future.



**Who Is the Company Behind Group-IB Business Email Protection?**

- **Seller:** [Group-IB](https://www.g2.com/sellers/group-ib)
- **Year Founded:** 2003
- **HQ Location:** Singapore
- **Twitter:** @GroupIB (9,646 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/group-ib/ (663 employees on LinkedIn®)






### 2. [MailTAC](https://www.g2.com/products/mailtac/reviews)
InQuest's Integrated Cloud Email Security solution, MailTAC, leverages Deep File Inspection® technology to swiftly dissect files to reveal threats, even when malicious content is embedded within macros, scripts, applets, spreadsheet cells, or metadata. MailTAC provides valuable insights through header and link analysis so you can proactively detect and prevent potential threats. Scan deeper, learn faster, and be ready for any emailed threat. Whether the threat is hitting your network for the first time, or has been hiding on your servers undetected, our email security solution has the tools you need to find it, uncover it, and stop it in its tracks.



**Who Is the Company Behind MailTAC?**

- **Seller:** [InQuest](https://www.g2.com/sellers/inquest)
- **Year Founded:** 2013
- **HQ Location:** Austin, US
- **LinkedIn® Page:** http://www.linkedin.com/company/inquest.net (21 employees on LinkedIn®)






### 3. [mxHero](https://www.g2.com/products/mxhero/reviews)
All the Power & Simplicity of Cloud Storage for your Emails



**Who Is the Company Behind mxHero?**

- **Seller:** [mxHero](https://www.g2.com/sellers/mxhero)
- **Year Founded:** 2012
- **HQ Location:** San Francisco, US
- **LinkedIn® Page:** https://www.linkedin.com/company/mxhero (16 employees on LinkedIn®)






### 4. [Nophi.sh](https://www.g2.com/products/nophi-sh/reviews)

**Who Is the Company Behind Nophi.sh?**

- **Seller:** [nophi.sh](https://www.g2.com/sellers/nophi-sh)
- **Year Founded:** 2016
- **HQ Location:** Paris, FR
- **LinkedIn® Page:** https://www.linkedin.com/company/nophish (1 employees on LinkedIn®)






### 5. [RevBits Email Security](https://www.g2.com/products/revbits-email-security/reviews)
RevBits Email Security is a next-generation email security solution that aims to close significant gaps in the current marketplace. Leveraging sophisticated and unique algorithms such as a patented page impersonation detection methodology, RevBits Email Security achieves the deepest level of email analysis. To ensure the email threat landscape is fully covered, RevBits Email Security delivers email analysis at its SEG and the individual user's inbox through an advanced endpoint analysis agent.



**Who Is the Company Behind RevBits Email Security?**

- **Seller:** [RevBits Privileged Access Management](https://www.g2.com/sellers/revbits-privileged-access-management)
- **Year Founded:** 2016
- **HQ Location:** Mineola, US
- **LinkedIn® Page:** http://www.linkedin.com/company/revbits-inc (12 employees on LinkedIn®)






### 6. [SCES](https://www.g2.com/products/sces/reviews)
SorbSecurity aims to address the TOP cyber security problems at the basics, Phishing & Ransomware in Email, Web and Others. SCES is a comprehensive Cloud Service to defend your email and business.



**Who Is the Company Behind SCES?**

- **Seller:** [SorbSecurity](https://www.g2.com/sellers/sorbsecurity)
- **HQ Location:** Singapore, SG
- **Twitter:** @SorbSecurity
- **LinkedIn® Page:** https://www.linkedin.com/company/sorbsecurity/ (2 employees on LinkedIn®)






### 7. [Shield](https://www.g2.com/products/mailprotector-shield/reviews)
Email security needed a new trust foundation, so we built it. Traditional approaches, like gateway or API only, that make trust decisions based on message sources or content analysis aren’t enough anymore. They’re too easily spoofed and manipulated, especially with the rise of AI. That’s why Shield’s zero trust foundation is built around your unique communication patterns. By automatically learning who you interact with and how you handle messages, Shield creates a trust network of verified contacts. Our adaptive intelligence (AI) turns this behavioral data into personalized protection, delivering only the email you want with no extra effort required.



**Who Is the Company Behind Shield?**

- **Seller:** [Mailprotector](https://www.g2.com/sellers/mailprotector)
- **Company Website:** https://www.mailprotector.com
- **Year Founded:** 1999
- **HQ Location:** Greenville, US
- **LinkedIn® Page:** https://www.linkedin.com/company/mailprotector (43 employees on LinkedIn®)






### 8. [So Email Security](https://www.g2.com/products/so-email-security/reviews)
SO Email Security API scans inbound and outbound email in real time, detecting phishing, spoofing, and malicious attachments before they reach users. Built for accounting firms, fintechs, and compliance teams that need audit-ready email security without managing infrastructure.





**Who Is the Company Behind So Email Security?**

- **Seller:** [So Email Security](https://www.g2.com/sellers/so-email-security)
- **Year Founded:** 2025
- **HQ Location:** Calgary, CA
- **LinkedIn® Page:** https://www.linkedin.com/company/soemailsecurity/ (5 employees on LinkedIn®)

**Who Uses This Product?**
- **Company Size:** 100% Small-Business





### 9. [SYNAQ](https://www.g2.com/products/synaq/reviews)
SYNAQ Securemail is an AI-powered cloud email security service that stops phishing, impersonation, malware, spam and data leaks before they reach the inbox. Multi-layered protection delivers 99.95% spam-detection accuracy across 3,000+ checks, continuously-updated anti-virus, and LinkShield — powered by LUCA, our proprietary AI that predicts and neutralises zero-day URL threats. Identity Threat Protection (ITP) shuts down domain spoofing and executive fraud across all your domains; Data Leak Prevention enforces outbound policy and compliance. Deploy in under 24 hours with a single DNS change — no software, no hardware — and integrate natively with Microsoft 365 via Azure AD. Backed by a 100% punitive phishing-protection SLA, a money-back guarantee, threat-intelligence reporting and 24/7 expert support.



**Who Is the Company Behind SYNAQ?**

- **Seller:** [SYNAQ](https://www.g2.com/sellers/synaq)
- **Year Founded:** 2004
- **HQ Location:** Johannesburg, ZA
- **LinkedIn® Page:** https://www.linkedin.com/company/synaq (31 employees on LinkedIn®)






### 10. [xorlab](https://www.g2.com/products/xorlab/reviews)
The xorlab Security Platform minimizes the attack surface on email with an AI-driven engine and protects your employees against modern email threats such as zero-hour phishing, business email compromise, fraud, malicious attachments, and ransomware. Maximize email security: xorlab analyses every email in the context of your organization and thus enables precise classification of all messages. Hundreds of signals per email are matched against your organization’s expected communication patterns to detect threats. Optimize email security spend: Automate the analysis and response to user-reported emails and get rid of block and allow lists. Stay in control: Trace back security decisions to indicators of attack, gain full visibility into communication patterns, and tune the xorlab platform to meet the unique needs of your organization.



**Who Is the Company Behind xorlab?**

- **Seller:** [xorlab AG](https://www.g2.com/sellers/xorlab-ag)
- **Year Founded:** 2015
- **HQ Location:** Stadtkreis 11, CH
- **LinkedIn® Page:** https://www.linkedin.com/company/xorlab (26 employees on LinkedIn®)







## What Is Cloud Email Security Solutions?

[Email Security Software](https://www.g2.com/categories/email-security)

## What Software Categories Are Similar to Cloud Email Security Solutions?

- [Secure Email Gateway Software](https://www.g2.com/categories/secure-email-gateway)
- [Security Awareness Training Software](https://www.g2.com/categories/security-awareness-training)
- [Data Loss Prevention (DLP) Software](https://www.g2.com/categories/data-loss-prevention-dlp)
- [Email Encryption Software](https://www.g2.com/categories/email-encryption)
- [Email Anti-spam Software](https://www.g2.com/categories/email-anti-spam)
- [Email Archiving Software](https://www.g2.com/categories/email-archiving)
- [Intelligent Email Protection Software](https://www.g2.com/categories/intelligent-email-protection)


---

## How Do You Choose the Right Cloud Email Security Solutions?

### What You Should Know About Cloud Email Security Software

### What is Cloud Email Security Software?

Using cloud email security software, companies can protect their systems from unwanted emails or malicious email threats. Cloud email security software tools detect and quarantine unwanted emails including those containing spam and bulk emails; malware, ransomware, spyware, and other viruses in malicious links or attachments; phishing and spear-phishing attempts; C-level executive impersonation attacks; advanced targeted attacks; and more. Cloud email security software may also provide other features such as email archiving, email encryption, and data loss prevention functions for outgoing email.

Cloud email security software shares similarities with [secure email gateways](https://www.g2.com/categories/secure-email-gateway), which are designed to protect on-premises email. Cloud email security software, alternatively, is designed to protect cloud-based email environments and does not require on-premises hardware installations.

Key Benefits of Cloud Email Security Software

- Offer a cloud-based, rather than on-premises, email security solution
- Include anti-spam, anti-malware, and anti-phishing capabilities
- Detect and quarantine suspicious emails, including links and attachments

### Why Use Cloud Email Security Software?

Cloud email security software helps companies protect their cloud-based email communications. Email is one of the most commonly used points of entry hackers use to gain access to corporate systems or to trick recipients into divulging sensitive information; often, these attacks lead to information or financial losses and reputational damage. Cloud email security software protects against email-focused attacks by blocking or quarantining suspicious emails. Given many companies have migrated from on-premises to cloud-based email solutions, the tools to secure their email need to evolve to face new threats emerging every day.

In particular, cloud email security software protects against spam, malware, and phishing attacks. Malware attacks, which often originate from emails with malicious links or attachments that unsuspecting users click or open. Malware can include ransomware, spyware, or other viruses. Ransomware encrypts company files and demands a random to decrypt them. Spyware usually sits silently on company systems stealing sensitive information such as intellectual property or trade secrets. Other viruses seek to embarrass companies and can damage a company’s brand and reputation. For example, a virus that sends an email to all of the user’s contacts, would fall in this category.

Cloud email security software also protects against social-engineering attacks such as phishing, spear-phishing, and c-level executive impersonation attacks. Phishing attacks are emails sent in bulk aiming to get employees to divulge information, such as sensitive financial information. Spear-phishing is a type of phishing that is targeted to a specific individual; in spear-phishing attacks, hackers spend time getting to know the targeted employee’s habits and preferences in order to send a personalized malicious email. The newest kind of phishing attacks are known as “impersonation attacks," which are often emails sent to company employees impersonating C-level executives which ask employees to make large financial transactions or purchases.

Additionally, companies use cloud email security software to meet regulatory compliance regarding data protection. Most notably, data loss prevention functions in cloud email security solutions help prevent data leakage on outgoing emails. For example, hacked email accounts (known as account takeover) can email out sensitive information. A less sinister example would be when a legitimate employee mistakenly sends out sensitive information such as personally identifiable information (PII), Social Security numbers, credit card numbers, and other confidential data. Additionally, when a breach occurs, reporting functions in the cloud email security software can assist IT administrators in understanding which accounts were impacted in the incident.

### Who Uses Cloud Email Security Software?

All companies that use email systems, whether on-premises or cloud-based, should have an email security tool in place. Cloud email security software is used to protect cloud-based email systems. Typically, a company's IT administrators manage the deployment and monitoring of these tools. Using cloud-based solutions instead of on-premises solutions, IT administrators can save time by not patching software or hardware.

### Cloud Email Security Software Features

At minimum, cloud email security software offers advanced filtering functionality and rule-based actions to prevent email-based spam, malware, viruses, and phishing attempts. Many cloud email security software providers include additional functionality including advanced threat protection, encryption, and data loss prevention tools, among others.

**Anti-spam —** This functionality prevents unwanted emails (bulk, mass, or other junk emails) from reaching recipients mailboxes. Filtering out spam emails can improve employee productivity, because employees are not sifting through unwanted emails.

**Anti-malware —** This feature prevents emails with malicious links or attachments embedded with malware (ransomware, spyware, other viruses, etc.) from reaching email recipients.

**Anti-phishing —** This functionality helps prevent social engineering attacks such as phishing, spear-phishing, and C-level executive impersonation attacks.

**Filtering functionality —** With filters, IT administrators can allow and prevent the delivery of certain kinds of emails to end users. Filters can include: approved senders, approved lists, greylists such as bulk emails that may not be malicious, blocked senders, blocklists, IP reputation, content (such as profanity, credit card numbers, password protected files, and other sensitive information), virus detection, redirects and malicious URLs, newsletter detection, attachment size, and invalid recipients.

**Rule-based actions —** Using rule-based actions, the cloud email security software can automatically block, delete, route to, tag a subject, copy an administrator, and redirect emails to another email address, among other actions.

**Granular search functionality —** Cloud email security solutions enable IT administrators to locate specific emails using granular search functionality. Users can narrow emails down from sender, recipient, content, and many other factors.

**User groups settings —** With user group settings, IT administrators can easily manage users by assigning them to groups and applying group settings.

**Reporting —** One of the major benefits of using cloud email security software is the ability to create reports to understand unique threats over time. Many cloud email security solutions provide incident logging with granular detail, which is required for regulatory compliance. Reports often come in PDF or CSV formats.

**Dashboards (administrator and end-user) —** Cloud email security solutions offer dashboards for administrators to manage their company’s email security, as well as quarantine dashboard for end users to review suspicious email activity related to their user account.

#### Additional Cloud Email Security Features

**Advanced threat protection —** As email-borne threats become more sophisticated, so must the security tools needed to thwart these attacks. Many cloud email security solutions include further security tools, providing an additional layer of protection on top of standard anti-spam, anti-malware, and anti-phishing functions. Advanced threat protections often include machine learning to conduct abnormal behavioral analysis, display name spoof detection (especially regarding C-level impersonation attacks), detecting lookalike email domains that are visually confusing (such as the letters “RN" looking like the letter “M" when in lowercase. Example, “name@ernail.com" visually looks like “name@email.com"), compromised email account detection, and other anomalies.

**Embedded data loss protection —** While cloud email security is mostly concerned with ensuring the safety of incoming mail, some tools monitor outgoing mail, as well. Monitoring can prevent employees from sending sensitive information externally via email. Monitoring can also include things such as ensuring employees do not use profanity or other non-approved language in their emails to prevent reputational damage.

**Multi-language —** Some cloud email security software providers support email analysis in multiple languages and allow custom dictionaries.

**Embedded encryption —** Some cloud email security solutions offer embedded encryption functions, which apply encryption to a company’s outgoing emails based on specific policies.

**Archiving —** Some cloud email security solutions also offer archiving solutions, which are helpful for companies in regulated industries to properly store, secure, and search emails as needed.

Other Features of Cloud Email Security [Solutions: Account takeover prevention](https://www.g2.com/categories/cloud-email-security/f/account-takeover-prevention), [Advanced threat protection (ATP)](https://www.g2.com/categories/cloud-email-security/f/advanced-threat-protection-atp)

### Trends Related to Cloud Email Security Software

Given that email remains an effective and preferred attack vector for hackers, deploying an email security solution is a must. For companies utilizing an on-premises email solution, secure email gateways act as a firewall preventing spam and other unwanted emails from entering the perimeter. But as companies shift from on-premises to cloud-based email providers, security must evolve with it. Cloud email security is designed to meet the needs of cloud-based email services and the increased connectivity those solutions provide. Cloud email security tools often offer advanced threat protection, which uses machine learning to respond to ever-evolving threats and can scan for malicious emails within the perimeter.

### Software and Services Related to Cloud Email Security Software

[**Security awareness training software**](https://www.g2.com/categories/security-awareness-training) **—** Training a company’s workforce on the security threats they face via email attacks is one step of many to prevent email-borne attacks. Using security awareness training software, companies can simulate attacks or fraudulent emails to help employees better identify malicious content before encountering it in real-life scenarios.

[**Password manager software**](https://www.g2.com/categories/password-manager) **—** Password managers help protect personal data by securing and strengthening personal passwords. They allow users to create strong and unique passwords for every website or application they log in to while saving the user from having to memorize each password.

[**Multi-factor authentication (MFA) software**](https://www.g2.com/categories/multi-factor-authentication-mfa) **—** MFA software helps improve security across a company by requiring additional authentication measures for access to sensitive information, systems, or applications.

[**Data loss prevention (DLP) software**](https://www.g2.com/categories/data-loss-prevention-dlp) **—** DLP tools prevent sensitive information, such as intellectual property, financial information, and customer sensitive data from being sent externally. Some cloud email security software providers offer native data loss prevention functionality for outbound emails, but DLP tools are also offered as a standalone product and can apply to other communication platforms besides emails, such as instant messaging and collaboration platforms.

[**Secure email gateway software**](https://www.g2.com/categories/secure-email-gateway) **—** Secure email gateways offer similar features to cloud email security software, such as anti-spam and anti-malware functions, but are meant for on-premises deployments.

[**Email anti-spam software**](https://www.g2.com/categories/email-anti-spam) **—** Though a native feature of cloud email security solutions, email anti-spam software is available as a standalone product. This is used to prevent malicious content from being delivered via email

[**Email encryption software**](https://www.g2.com/categories/email-encryption) **—** Email encryption is an embedded feature of many cloud email security solutions, but is also available as a standalone product. Email encryption is used to ensure data in transit remains secure until the authorized party is identified

[**Cloud access security broker (CASB) software**](https://www.g2.com/categories/cloud-access-security-broker-casb) **—** CASB software is used to provide a layer of protection and policy enforcement for employees accessing cloud-based software. CASB solutions are also used to identify abnormal behaviors from internal actors.

[**Cloud file security software**](https://www.g2.com/categories/cloud-file-security) **—** Cloud file security software is used to secure information stored within cloud-based (SaaS) applications.

[**Website security software —**](https://www.g2.com/categories/website-security)Website security software is designed to protect business websites from a number of internet-based threats.