Best Email Security Software for Small Businesses (Free & Paid)

Running a small business comes with unique challenges, including tight budgets and limited resources. That’s why choosing the right email security software can significantly improve your workflow and help you compete more effectively. Here, we feature the top email security software solutions designed for small businesses—offering affordable pricing, user-friendly interfaces, and scalable features that grow alongside your company.

Last Updated: October 01, 2025

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List of Top Best Email Security Software for Small Businesses

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Censornet Email Security is a comprehensive solution designed to protect organizations from email-based threats such as phishing, malware, and spam. The platform uses advanced machine learning and AI algorithms to analyze incoming and outgoing emails, detecting suspicious content and automatically filtering out potential threats before they reach the inbox. Censornet Email Security also includes a... Read more about Censornet Email Security

Free Trial

NA

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Contact Vendor

Location

United Kingdom

InboxGuard is a security awareness training software focused on educating employees about cybersecurity risks, particularly phishing and email threats. The platform offers interactive training modules, simulations, and quizzes that keep employees engaged and informed about safe email practices. InboxGuard’s phishing simulation feature allows companies to send mock phishing emails to employees, h... Read more about InboxGuard

Free Trial

Available

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Contact Vendor

Location

United States

Guardz is a comprehensive vulnerability scanner software designed to protect businesses from security threats by identifying weaknesses in their IT infrastructure. The platform scans networks, servers, applications, and devices to detect vulnerabilities such as unpatched software, misconfigurations, and security gaps. Guardz uses advanced scanning techniques to detect both known and unknown vulner... Read more about Guardz

Free Trial

Available

Pricing Type

$0 Per year

Location

Israel

EveryCloud Antispam is a cutting-edge Email Security Software designed to protect organizations from spam, phishing, and other email-based threats. It offers a comprehensive solution that filters incoming and outgoing emails, ensuring that only legitimate and safe messages reach users' inboxes. EveryCloud Antispam employs advanced algorithms and machine learning techniques to detect and block mali... Read more about EveryCloud Antispam

Free Trial

Available

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Location

United Kingdom

Accurately convert OST to PST with the automated OST converter tool

Email Security Software helps safeguard your emails from threats like phishing, malware, spam, and data breaches. It ensures secure communication, compliance, and privacy for businesses and individuals. Key Features of Email Security Software: ✔ Spam & Phishing Protection – Blocks malicious emails. ✔ Malware & Ransomware Detection – Scans attachments and links. ✔ Encryption – Se... Read more about Recoveryfix OST to PST Converter

Free Trial

30 Days

Pricing Type

$39 Per one-time

Location

India

Import PST file to Office 365 with accurate data structure

Recoveryfix PST to Office 365 is a secure email migration and recovery software that ensures safe transfer of Outlook PST data to Microsoft 365 with robust email security protocols. It encrypts and migrates emails, contacts, and calendars while preserving metadata integrity and preventing data breaches. With advanced email security features, it safeguards sensitive information during transfer, ma... Read more about Recoveryfix PST to Office 365

Free Trial

30 Days

Pricing Type

$99 Per one-time

Location

India

Automated Human Risk Management

usecure is an innovative software solution focused on human risk management designed to enhance cybersecurity awareness and behavior within organizations. Its key feature is personalized security awareness training, which tailors content to individual user risk profiles, making learning more effective. usecure excels in simulated phishing tests, enabling organizations to assess and reduce suscepti... Read more about usecure

Free Trial

14 Days

Pricing Type

Contact Vendor

Location

United Kingdom

Delivery Trust is an advanced email management software designed to enhance the security and efficiency of email communications. This platform provides comprehensive tools for managing email delivery, ensuring that important messages are sent and received securely. Users can track email interactions and verify delivery status, facilitating compliance with regulatory standards. Delivery Trust featu... Read more about Delivery Trust

Free Trial

Available

Pricing Type

$7.95 Per user

Location

United States

DMARC Analyzer is a specialized email security software designed to help organizations protect their email communications from phishing and spoofing attacks. This powerful platform enables businesses to implement DMARC (Domain-based Message Authentication, Reporting, and Conformance) policies effectively, ensuring that their emails are authenticated and delivered securely. With DMARC Analyzer, use... Read more about DMARC Analyzer

Free Trial

Available

Pricing Type

Contact Vendor

Location

Netherlands

pEp for Email is an email security software designed to protect users from cyber threats such as phishing, malware, and data breaches. It uses end-to-end encryption to ensure that all email communication remains private and secure, preventing unauthorized access to sensitive information. pEp for Email is simple to use and integrates seamlessly with existing email platforms, offering a secure solut... Read more about pEp for email

Free Trial

NA

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Location

Switzerland

Email Shield is an accounts payable software designed to protect businesses from fraudulent invoices and payment-related scams. The platform provides tools for verifying invoice authenticity, monitoring transaction histories, and identifying suspicious activity, ensuring financial security. Email Shield’s analytics deliver insights into payment trends, potential risks, and fraud detection rates,... Read more about Email Shield

Free Trial

Available

Pricing Type

$0.02 Per month

Location

United States

Zivver is a secure file sharing software designed to provide businesses with reliable and encrypted solutions for exchanging sensitive information effortlessly. It offers a comprehensive platform for sending, receiving, and managing files with advanced security measures, ensuring that confidential data remains protected against unauthorized access and cyber threats. Zivver features intuitive inter... Read more about Zivver

Free Trial

NA

Pricing Type

$3.99 Per user

Location

Netherlands

Mailwall is a robust email security software solution designed to protect organizations from email-based threats, such as phishing, malware, and spam. The platform uses advanced algorithms and machine learning to analyze incoming emails, detect malicious attachments, and block harmful links before they can reach users' inboxes. Mailwall’s real-time scanning and filtering capabilities ensure that... Read more about Mailwall

Free Trial

Available

Pricing Type

$1.5 Per month

Location

United Kingdom

ORF is a robust email security software designed to protect organizations from email-based threats such as spam, phishing, and malware. By using advanced filtering algorithms and machine learning, ORF helps detect and block unwanted emails before they reach employees’ inboxes. The software offers real-time scanning, ensuring that emails are analyzed for malicious attachments, links, and suspicio... Read more about ORF

Free Trial

Available

Pricing Type

$5.5 Per user

Location

Hungary

Abusix Mail Intelligence is an email security software designed to protect businesses from spam, phishing, and other email-based threats. It offers advanced filtering techniques, including machine learning and AI, to detect and block malicious emails before they reach inboxes. Abusix Mail Intelligence features customizable rules for email handling, including quarantine options and automated report... Read more about Abusix Mail Intelligence

Free Trial

Available

Pricing Type

$10 Per month

Location

United States

MailTAC is an advanced email security software solution designed to protect businesses from email-based threats, such as phishing, malware, and spam. With MailTAC, organizations can safeguard their email communications by filtering out harmful messages and blocking malicious attachments before they reach employees' inboxes. The software uses artificial intelligence and machine learning algorithms ... Read more about MailTAC

Free Trial

NA

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Location

United States

DMARCLY is a comprehensive email security software designed to protect businesses from email-based threats such as phishing, malware, and spam. Utilizing advanced machine learning algorithms, DMARCLY identifies and mitigates potential risks in real-time, ensuring that your organization's communication remains secure and reliable. The platform offers robust features including email authentication, ... Read more about DMARCLY

Free Trial

Available

Pricing Type

$14.99 Per user

Location

Japan

Boxbe is an advanced email security software designed to protect users from unwanted emails, phishing attacks, and spam. It uses a unique algorithm to filter out junk messages while ensuring that legitimate emails from trusted sources are delivered to the inbox. Boxbe provides users with the ability to create personalized filters and prioritize important messages, reducing the risk of email overlo... Read more about Boxbe

Free Trial

NA

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Location

United States

Advanced Threat Defense Suite is a comprehensive email security software solution that protects organizations from evolving cyber threats targeting their email systems. The software utilizes multiple layers of security, including advanced threat detection, anti-phishing, anti-malware, and data loss prevention (DLP) technologies, to identify and block malicious emails before they reach end users. I... Read more about Advanced Threat Defense Suite

Free Trial

NA

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Location

United States

MailGates is an advanced email security software designed to protect organizations from email-based threats while ensuring secure communication. This platform provides users with comprehensive tools for filtering spam, detecting phishing attempts, and blocking malicious attachments, safeguarding sensitive information from cyber threats. MailGates features an intuitive dashboard that allows adminis... Read more about MailGates

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

Mail Zipper is a robust Email Security Software designed to protect businesses from email-based threats and ensure the confidentiality and integrity of their communications. It offers a comprehensive platform for safeguarding sensitive information, preventing unauthorized access, and mitigating the risks of phishing, malware, and spam attacks. Mail Zipper features advanced encryption technologies ... Read more about Mail Zipper

Free Trial

Available

Pricing Type

$20 Per user

Location

Japan

Keepnet Labs is a security awareness training software designed to educate employees on cybersecurity best practices and reduce risks related to human error. The platform provides a range of interactive training modules, phishing simulations, and assessments to help employees recognize and respond to potential security threats. Keepnet Labs offers customizable training programs, allowing organizat... Read more about Keepnet Labs

Free Trial

Available

Pricing Type

Contact Vendor

Location

United Kingdom

safeattach is an email security software solution designed to protect organizations from cyber threats, such as phishing, malware, and unauthorized data access. This platform offers tools for scanning attachments, verifying links, and monitoring incoming emails to ensure they are safe before reaching users. With real-time threat detection, safeattach automatically blocks malicious content, reducin... Read more about safeattach

Free Trial

NA

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Location

Japan

Regain OST to PST Converter efficiently converts inaccessible or corrupt OST files to PST, preserving data integrity and ensuring smooth migration.

Regain OST to PST Converter prioritizes email security by ensuring that all converted data, including emails, attachments, contacts, and calendars, is processed with encryption. The tool maintains the integrity and confidentiality of sensitive information throughout the conversion process. Additionally, it ensures that no data is altered or lost, providing a secure and reliable conversion experie... Read more about Regain OST to PST Converter

Free Trial

7 Days

Pricing Type

Contact Vendor

Location

India

Halon is a robust email management software solution designed to optimize email flow, security, and performance for organizations of all sizes. It acts as a smart email gateway, filtering incoming and outgoing emails for spam, viruses, and malicious content, ensuring that only safe and relevant messages reach users' inboxes. Halon provides advanced security features such as encryption, data loss p... Read more about Halon

Free Trial

Available

Pricing Type

Contact Vendor

Location

Sweden

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