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, 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 Solutions | Account takeover prevention

Proofpoint Core Email Protection

Proofpoint Collaboration Security tackles multichannel, multistage attacks with 99.999% detection accuracy. It identifies and remediates advanced email threats including BEC, ransomware, phishing, ATO, and exec impersonations. The solution blocks threats across email and other digital communication and collaboration platforms, i.e. MS Teams, WhatsApp, Slack, LinkedIn, OneDrive, protecting users anywhere they work, on any device. Customers get protection against both internal and supplier account compromise, and strengthens human resilience against emerging threats. With Proofpoint’s Collaboration Security, customers ensure that interactions with business partners, suppliers, and even AI agents remain trusted and secure.

Average Rating: 4.6/5.0

Total Reviews: 617

How Do G2 Users Rate Proofpoint Core Email Protection?

Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.3/10)
Advanced Threat Protection (ATP): 9.2/10 (Category avg: 9.1/10)
Anti-Phishing: 9.2/10 (Category avg: 9.2/10)
Quarantine: 9.4/10 (Category avg: 9.0/10)

Who Is the Company Behind Proofpoint Core Email Protection?

Seller: Proofpoint
Company Website:
Year Founded: 2002
HQ Location: Sunnyvale, CA
LinkedIn® Page: www.linkedin.com
5,261 employees on LinkedIn®
Ownership: NASDAQ: PFPT

Who Uses This Product?

Who Uses This: Information Security Analyst, IT Security Engineer
Top Industries: Financial Services, Hospital & Health Care
Company Size: 66% Large, 30% Medium

What Do G2 Reviewers Say About Proofpoint Core Email Protection?

AI-generated summary from verified user reviews

Pros

Users commend the immediate impact on risk reduction with Proofpoint Core Email Protection's automated analysis capabilities.
Users value the effective email filtering of Proofpoint Core, enhancing spam management and BEC identification significantly.
Users appreciate the ease of use of Proofpoint Core Email Protection, benefiting from a streamlined, navigable platform.
Users commend the immediate impact on risk reduction and effective identification of BEC types of emails by Proofpoint.
Users value Proofpoint for its exceptional security, effectively blocking threats and ensuring safe email communications.

Cons

Users find the outdated interface challenging, with complexity and overwhelming information complicating email management.
Users find the user interface lacking, noting clunkiness and difficulty in retrieving accurate search results.
Users face email categorization issues that lead to confusion and require manual intervention for legitimate emails.
Users find the complexity of Proofpoint Core Email Protection can make policy tuning and management time-consuming.
Users face frequent false positives with Proofpoint, leading to miscommunication and increased management overhead.

What Are Recent G2 Reviews of Proofpoint Core Email Protection?

"Powerful Email Protection, but Policy Management Needs Polish"

Rating: 4.5/5.0 stars

— Verified User in Information Technology and Services

Product	Best for	User Review
Barracuda Email Protection 4.5/5(250)	M365-integrated phishing defense with incident response	"Easy Email Authentication Setup and Time-Saving Quarantine Digests"
Acronis Cyber Protect Cloud 4.7/5(1,572)	Consolidated email threat defense with unified backup	"Great value for money, multiple possibilities in a single tool, excellent support!"
Proofpoint Core Email... 4.6/5(629)	Pre- and post-delivery phishing remediation with TAP/TRAP	"Powerful Email Protection, but Policy Management Needs Polish"
Paubox 4.9/5(680)	Portal-free HIPAA email encryption for healthcare	"Simple, HIPAA-Compliant Newsletters with Helpful Open and Click Tracking"
Valimail 4.5/5(698)	Automated DMARC enforcement with multi-domain visibility	"Free for M365 Customers with Simple Onboarding and Clear SPF/DMARC Reporting"
Check Point Email Security 4.6/5(534)	API-native phishing prevention across Microsoft 365 collaboration	"Powerful, Customizable Protection with an Intuitive UI at an Affordable Price"
Abnormal AI 4.7/5(97)	API-native BEC and account-takeover detection	"Frictionless Email Security, Though Legitimate Messages Still Get Misfiled"
Mimecast Email &... 4.4/5(384)	M365-integrated phishing and impersonation defense	"Solid protection, dated interface"
Coro Cybersecurity 4.7/5(236)	M365-native phishing and spam remediation	"Centralized, Intuitive Security Management with Coro Cybersecurity"

Best Cloud Email Security Solutions with Account takeover prevention Capabilities

How Many Cloud Email Security Solutions Products Does G2 Track?

Category Stats (Nov 2026)

How Does G2 Rank Cloud Email Security Solutions Products?

G2 Grid® for Cloud Email Security Solutions

How Do G2 Users Rate Proofpoint Core Email Protection?

Who Is the Company Behind Proofpoint Core Email Protection?

Who Uses This Product?

What Do G2 Reviewers Say About Proofpoint Core Email Protection?

Pros

Cons

What Are Recent G2 Reviews of Proofpoint Core Email Protection?

What Are G2 Users Discussing About Proofpoint Core Email Protection?

How Do G2 Users Rate Microsoft Defender for Office 365?

Who Is the Company Behind Microsoft Defender for Office 365?

Who Uses This Product?

What Do G2 Reviewers Say About Microsoft Defender for Office 365?

Pros

Cons

What Are Recent G2 Reviews of Microsoft Defender for Office 365?

What Are G2 Users Discussing About Microsoft Defender for Office 365?

How Do G2 Users Rate Cloudflare One (SASE)?

Who Is the Company Behind Cloudflare One (SASE)?

Who Uses This Product?

What Do G2 Reviewers Say About Cloudflare One (SASE)?

Pros

Cons

What Are Recent G2 Reviews of Cloudflare One (SASE)?

What Are G2 Users Discussing About Cloudflare One (SASE)?

AI can help you find the answers. G2 helps you trust them.

How Do G2 Users Rate FortiMail?

Who Is the Company Behind FortiMail?

Who Uses This Product?

What Do G2 Reviewers Say About FortiMail?

Pros

Cons

What Are Recent G2 Reviews of FortiMail?

How Do G2 Users Rate Barracuda Email Gateway Defense?

Who Is the Company Behind Barracuda Email Gateway Defense?

Who Uses This Product?

What Do G2 Reviewers Say About Barracuda Email Gateway Defense?

Pros

Cons

What Are Recent G2 Reviews of Barracuda Email Gateway Defense?

What Are G2 Users Discussing About Barracuda Email Gateway Defense?

How Do G2 Users Rate Cisco Secure Email Threat Defense?

Who Is the Company Behind Cisco Secure Email Threat Defense?

Who Uses This Product?

What Are Recent G2 Reviews of Cisco Secure Email Threat Defense?

What Are G2 Users Discussing About Cisco Secure Email Threat Defense?

How Do G2 Users Rate Symantec Email Security.Cloud?

Who Is the Company Behind Symantec Email Security.Cloud?

Who Uses This Product?

What Are Recent G2 Reviews of Symantec Email Security.Cloud?

What Are G2 Users Discussing About Symantec Email Security.Cloud?

How Do G2 Users Rate N-able Mail Assure?

Who Is the Company Behind N-able Mail Assure?

Who Uses This Product?

What Do G2 Reviewers Say About N-able Mail Assure?

Pros

Cons

What Are Recent G2 Reviews of N-able Mail Assure?

What Are G2 Users Discussing About N-able Mail Assure?

How Do G2 Users Rate Security Gateway?

Who Is the Company Behind Security Gateway?

Who Uses This Product?

What Are Recent G2 Reviews of Security Gateway?

What Are G2 Users Discussing About Security Gateway?

How Do G2 Users Rate Zix Email Threat Protection?

Who Is the Company Behind Zix Email Threat Protection?

Who Uses This Product?

What Are Recent G2 Reviews of Zix Email Threat Protection?