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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AnubisNetworks Mail Protection Service is a cutting-edge Email Security Software designed to safeguard organizations from a wide range of email-based threats, including phishing, malware, spam, and ransomware. It offers a comprehensive platform for securing email communications, ensuring that sensitive information remains confidential and protected from cyberattacks. AnubisNetworks Mail Protection... Read more about AnubisNetworks Mail Protection Service

Free Trial

Available

Pricing Type

$1 Per month

Location

Portugal

Hoxhunt is a security awareness training software designed to help organizations improve employee cybersecurity knowledge and reduce the risk of security breaches. The platform offers interactive training modules, phishing simulations, and real-world scenarios to teach employees how to identify and respond to common security threats like phishing attacks, malware, and social engineering. Hoxhunt�... Read more about Hoxhunt

Free Trial

NA

Pricing Type

Contact Vendor

Location

Finland

Planck is an advanced email security software designed to protect organizations from a variety of email-based threats such as phishing, malware, and spam. With cyber threats constantly evolving, Planck uses cutting-edge technologies like artificial intelligence and machine learning to detect and block malicious emails before they reach the inbox. The software offers real-time protection by scannin... Read more about planck

Free Trial

Available

Pricing Type

$4.99 Per month

Location

Switzerland

Document GPS is an intuitive document control software that helps organizations track, manage, and secure their critical documents throughout their lifecycle. Designed for industries where compliance and confidentiality are essential, such as healthcare, legal, and financial services, Document GPS ensures that sensitive documents are easily accessible, properly versioned, and securely stored. The ... Read more about Document GPS

Free Trial

Available

Pricing Type

$4 Per user

Location

United States

Email Marketing Platform

Selzy is an intuitive email marketing platform designed to cater to businesses of all sizes, focusing on simplicity and effectiveness. It shines with its easy-to-use interface, allowing users to create and send emails quickly without needing technical expertise. Selzy offers a range of professionally designed templates, making the creation of visually appealing emails a breeze. Its powerful segmen... Read more about Selzy

Free Trial

NA

Pricing Type

Free

Location

United States

RevBits Email Security is a cutting-edge email security software that safeguards your organization's communications from threats such as phishing, malware, and spam. Utilizing advanced filtering technologies and artificial intelligence, RevBits Email Security detects and blocks malicious emails before they reach your inbox. The software provides real-time threat intelligence, continuously updating... Read more about RevBits Email Security

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

Bracket is an advanced email security software designed to help organizations protect their email communications from threats and ensure data integrity. The platform provides comprehensive tools for detecting and preventing phishing attacks, malware, and unauthorized access, ensuring that businesses can safeguard sensitive information. Bracket allows users to implement multi-layered security proto... Read more about Bracket

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

MeSign is a cutting-edge digital signature software designed to provide a secure, efficient, and legally compliant solution for signing documents electronically. This platform allows users to sign, verify, and manage digital documents without the need for physical signatures, reducing the time, cost, and complexity of document workflows. MeSign leverages advanced encryption technologies to ensure ... Read more about MeSign

Free Trial

NA

Pricing Type

Contact Vendor

Location

United Kingdom

Cyber Risk Aware is a Compliance Software that helps organizations identify and mitigate cyber risks while ensuring compliance with industry regulations and standards. The software provides a comprehensive suite of tools for managing cybersecurity, including risk assessments, training modules, and policy management. Cyber Risk Aware allows businesses to perform regular security assessments, identi... Read more about Cyber Risk Aware

Free Trial

NA

Pricing Type

Contact Vendor

Location

Ireland

Mailock is an Email Security Software that helps organizations protect sensitive email communications through encryption and secure delivery mechanisms. It enables businesses to send encrypted emails that can only be accessed by the intended recipient, ensuring confidentiality and privacy. Mailock’s easy-to-use interface allows users to securely encrypt emails without requiring special software ... Read more about Mailock

Free Trial

Available

Pricing Type

Contact Vendor

Location

United Kingdom

etherFAX is a cloud-based fax server software that allows businesses to send and receive faxes electronically without the need for traditional fax machines. By digitizing the fax process, etherFAX simplifies communication, increases efficiency, and reduces hardware costs. The software supports sending faxes via email, web portal, or integrated applications, ensuring flexibility for businesses of a... Read more about etherFAX

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

m-FILTER is a comprehensive email security software designed to protect organizations from a wide range of email-based threats, including spam, malware, phishing attacks, and data breaches. It offers a robust suite of tools for filtering, monitoring, and securing email communications, ensuring that sensitive information remains safe and that users are protected from malicious content. m-FILTER’s... Read more about m-FILTER

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

matriXcloud is an advanced email security software solution designed to protect businesses from email-based threats, such as phishing, malware, spam, and data breaches. This cloud-based service provides real-time threat detection and filtering, helping businesses mitigate risks and ensure that their email communications remain secure. matriXcloud uses a combination of machine learning algorithms, ... Read more about matriXcloud

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

Maileyes is a cutting-edge email security software designed to protect businesses from email-based threats such as phishing, malware, spam, and advanced persistent threats (APTs). The platform uses AI-driven algorithms to analyze incoming email content, attachments, and sender behavior, identifying potential risks before they reach users' inboxes. Maileyes provides real-time scanning and filtering... Read more about Maileyes

Free Trial

Available

Pricing Type

$150 Per user

Location

Japan

SendGuard for Outlook is a comprehensive email security software that integrates directly into Microsoft Outlook to protect your inbox from potential threats. Designed to enhance email security and prevent phishing, malware, and data breaches, SendGuard helps businesses safeguard sensitive information sent through email. The software automatically scans outbound emails for potential risks, such as... Read more about SendGuard for Outlook

Free Trial

Available

Pricing Type

Contact Vendor

Location

NA

Vaultastic is a sophisticated email management software that ensures the secure storage and management of your email communications. Designed for businesses of all sizes, Vaultastic offers a reliable archiving solution, preserving emails for compliance and easy retrieval. With its intuitive interface, users can quickly search for and access important messages, reducing the time spent on email mana... Read more about Vaultastic

Free Trial

Available

Pricing Type

$12.77 Per month

Location

India

ClrStream is a sophisticated Network Security Software designed to safeguard organizational networks and ensure data integrity. This platform provides a comprehensive suite of tools for monitoring network traffic, managing user access, and enforcing security protocols. Users can easily track and analyze user behavior, identifying potential security threats before they escalate. The intuitive inter... Read more about ClrStream

Free Trial

Available

Pricing Type

$12 Per year

Location

India

Glasswall Email Security is a premier Email Security Software designed to protect organizations from a wide range of email-based threats, including phishing, malware, ransomware, and spam. It offers a comprehensive suite of tools for securing email communications, ensuring that sensitive information remains confidential and that systems are safeguarded against cyberattacks. Glasswall Email Securit... Read more about Glasswall Email Security

Free Trial

Available

Pricing Type

Contact Vendor

Location

United Kingdom

XFA Mail is a robust email security software designed to protect organizations from email-based threats and ensure secure communication. This platform provides a comprehensive suite of tools for spam filtering, phishing detection, and malware protection, safeguarding sensitive information from cyberattacks. With its user-friendly interface, XFA Mail allows administrators to manage email policies, ... Read more about XFA Mail

Free Trial

Available

Pricing Type

$0.01 Per one-time

Location

United States

Libraesva Email Security is a robust email security solution designed to protect organizations from email-based threats, including phishing, malware, and spam. The software uses advanced filtering algorithms to analyze incoming email traffic, identifying and blocking malicious emails before they reach the inbox. Libraesva offers multiple layers of protection, including anti-spam, anti-phishing, an... Read more about Libraesva Email Security

Free Trial

Available

Pricing Type

$5 Per year

Location

Italy

Libraesva LetsDMARC is an email security software that protects organizations from phishing, spoofing, and other email-based cyber threats. The platform utilizes DMARC (Domain-based Message Authentication, Reporting & Conformance) technology to authenticate emails and ensure that messages are genuinely from trusted sources. Libraesva LetsDMARC provides real-time monitoring and analytics, allowing ... Read more about Libraesva LetsDMARC

Free Trial

Available

Pricing Type

$264 Per year

Location

Italy

ContentCatcher is a sophisticated Email Security Software designed to protect businesses from email-based threats while ensuring seamless communication and data integrity. This comprehensive platform offers a wide range of features, including spam filtering, phishing protection, malware detection, email encryption, and detailed threat analytics, ensuring that all aspects of email security are hand... Read more about ContentCatcher

Free Trial

Available

Pricing Type

$1.5 Per feautre

Location

United States

BitDam ATP (Advanced Threat Protection) is a sophisticated email security software designed to protect organizations from advanced threats such as phishing, malware, and ransomware delivered via email. The platform employs a unique approach by analyzing incoming emails in a secure environment before they reach users’ inboxes, ensuring that potential threats are neutralized without impacting prod... Read more about BitDam ATP

Free Trial

Available

Pricing Type

$2 Per month

Location

Israel

DeliverySlip is a secure file sharing software designed for businesses that require high levels of privacy and data protection. The platform allows users to send and receive encrypted documents with confidence, ensuring sensitive information remains protected throughout the sharing process. DeliverySlip supports various file formats and integrates easily with email services, allowing users to send... Read more about DeliverySlip

Free Trial

Available

Pricing Type

$4 Per feautre

Location

United States

Clearedin is a robust email security software solution designed to protect businesses from email-based threats. It offers advanced protection against phishing, spam, malware, and other malicious attacks that commonly target email users. By implementing Clearedin, organizations can safeguard their email communications and sensitive data. The software uses sophisticated algorithms to detect and bloc... Read more about Clearedin

Free Trial

Available

Pricing Type

Contact Vendor

Location

United States

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