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: 612

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: 9.0/10)
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
Twitter: @proofpoint
31,157 Twitter followers
LinkedIn® Page: www.linkedin.com
5,261 employees on LinkedIn®

Who Uses This Product?

Who Uses This: Information Security Analyst, IT Security Engineer
Top Industries: Financial Services, Hospital & Health Care
Company Size: 66% Large, 29% Medium

What Do G2 Reviewers Say About Proofpoint Core Email Protection?

AI-generated summary from verified user reviews

Pros

Users highlight the exceptional malware protection provided by Proofpoint Core Email Protection, ensuring robust security and support.
Users value the reliable email security of Proofpoint Core Email Protection, ensuring peace of mind at work.
Users value the ease of use in Proofpoint Core Email Protection, appreciating its simple interface and effective security.
Users value the effective anti-phishing and anti-malware capabilities of Proofpoint, ensuring robust email security from day one.
Users value the effective security of Proofpoint Core Email Protection, ensuring reliable email safety for their environment.

Cons

Users find the outdated interface of Proofpoint Core Email Protection to be overwhelming and not user-friendly.
Users find the user interface confusing with many portals, although improvements are planned in the future.
Users experience intermittent email access issues and slow updates, along with challenges from false positives and misdirected emails.
Users find the complexity of Proofpoint Core Email Protection overwhelming and cumbersome, especially with its configurations.
Users report a high rate of false positives, causing legitimate emails to be flagged as spam frequently.

What Are Recent G2 Reviews of Proofpoint Core Email Protection?

"Effective Daily Protection Against Most Email Bourne Threats"

Rating: 5.0/5.0 stars

— juwon f.

Product	Best for	User Review
Barracuda Email Protection 4.5/5(160)	M365-integrated phishing defense with incident response	"Easy Email Authentication Setup and Time-Saving Quarantine Digests"
Acronis Cyber Protect Cloud 4.7/5(1,462)	Consolidated email threat defense with unified backup	"All-in-One Backup & Security That Saves Our MSP Time—and Leaves Room for Profit"
Proofpoint Core Email... 4.6/5(628)	Pre- and post-delivery phishing remediation with TAP/TRAP	"Essential Email Protection That Blocks Threats Before They Reach Users"
Check Point Email Security 4.6/5(534)	API-native phishing prevention across Microsoft 365 collaboration	"Accuracy Redefined, Perfect for Email Security"
Paubox 4.9/5(648)	Portal-free HIPAA email encryption for healthcare	"Seamless integration with Google Workspace, great tech support, totally secure email!"
Valimail 4.5/5(667)	Automated DMARC enforcement with multi-domain visibility	"Valimail Makes Free DMARC Implementation Easy"
Abnormal AI 4.7/5(89)	API-native BEC and account-takeover detection	"Keeps My Inbox Clean with Smart Email Sorting"
Mimecast Advanced Email... 4.4/5(370)	M365-integrated phishing and impersonation defense	"Solid protection, dated interface"
Guardz 4.6/5(126)	M365/Google-native email threat consolidation for MSPs	"Effortless Security Management with Guardz"
Coro Cybersecurity 4.7/5(233)	M365-native phishing and spam remediation	"Coro is a Fantastic Managed EDR (Endpoint Detection & Response) System"

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Category Stats (Sep 2026)

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G2 Grid® for Cloud Email Security Solutions

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