Best Online Email Security Software

In an always-connected world, many businesses prefer email security software solutions that require no local installation. Below, you’ll find top online email security software platforms—often referred to as cloud-based or web-based—offering easy subscription models, automatic updates, and seamless remote access. Explore these recommended tools to streamline workflows, enhance collaboration, and keep your team productive from anywhere.

Last Updated: September 18, 2025

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List of Top Web-Based Email Security Software

Pricing Options

Monthly Subscription

Annual Subscription

One-Time Payment

Quote Based

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Small Business

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Material Security is a robust email security software designed to protect organizations from phishing attacks, malware, and unauthorized access to sensitive information. Focusing on real-time email threat detection, the software leverages advanced AI to identify potential security risks and prevent malicious emails from reaching employees' inboxes. Material Security automatically scans incoming me... Read more about Material Security

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

DNS filtering software for Internet Security

Flashstart is an ultimate web filtering and security solution developed to keep the digital environment safe and productive. With its user-friendly interface, it effortlessly blocks malicious websites and harmful content, ensuring a secure online experience for all users. Flashstart's real-time threat detection and URL categorization feature proactively identifies potential risks, allowing you to ... Read more about FlashStart

Free Trial

14 Days

Pricing Type

Contact Vendor

Location

Italy

Zulu eDM is a robust campaign management software designed to streamline marketing efforts for businesses of all sizes. With its comprehensive set of tools, users can create, execute, and track marketing campaigns across multiple channels, including email, social media, and web. The software features a user-friendly interface that simplifies the campaign creation process, allowing marketers to des... Read more about Zulu eDM

Free Trial

Available

Pricing Type

$10 Per feautre

Location

Australia

MyEmailVerifier is a robust email verification tool designed to help businesses clean and maintain their email lists, ensuring better deliverability and higher engagement. This platform provides a simple yet powerful solution for identifying invalid, inactive, or risky email addresses that could impact marketing campaigns. MyEmailVerifier uses advanced algorithms to check emails for syntax errors,... Read more about MyEmailVerifier

Free Trial

Available

Pricing Type

$1.44 Per feautre

Location

United States

Marutto Mail Security is an email security software designed to protect businesses from phishing attacks, spam, malware, and other email-based threats. The platform offers advanced filtering capabilities that scan inbound emails for suspicious content, including malicious attachments, harmful links, and phishing attempts. Marutto Mail Security uses machine learning algorithms to continually improv... Read more about Marutto Mail Security

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

Share Files Securely

Encryo is a secure communication and file management platform designed with a strong focus on data encryption and privacy. It excels in protecting sensitive information through advanced encryption technologies which makes it ideal for industries handling confidential data. Encryo offers a range of features, including secure email, file sharing, and e-signature capabilities, all within a protected ... Read more about Encyro

Free Trial

14 Days

Pricing Type

$$9 Per month

Location

United States

Mail Defender is a comprehensive email security solution that protects businesses from spam, phishing attacks, malware, and other email-borne threats. By utilizing advanced algorithms and real-time filtering, Mail Defender ensures that malicious emails are blocked before reaching employees’ inboxes, reducing the risk of data breaches and cyberattacks. The software offers customizable security se... Read more about Mail Defender

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

Active! gateSS is a robust email security software designed to protect organizations from email-based threats and ensure the confidentiality of sensitive communications. This platform provides advanced filtering capabilities to detect and block spam, phishing attacks, and malicious attachments, safeguarding users from potential cyber threats. Active! gateSS employs encryption protocols to secure e... Read more about Active! gateSS

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

Beeble is a secure and scalable cloud storage software designed to help businesses and individuals store, manage, and access their digital files with ease and confidence. It offers a comprehensive platform for uploading, organizing, and sharing files across multiple devices, ensuring that your data is always accessible, regardless of location. Beeble’s intuitive interface allows users to easily ... Read more about Beeble

Free Trial

NA

Pricing Type

Contact Vendor

Location

United Kingdom

Conecta Suite is an email signature management software designed to help businesses create, manage, and enforce consistent email signatures across their organization. With Conecta Suite, businesses can design branded email signatures that align with their corporate identity, ensuring uniformity and professionalism in all communications. The platform allows for easy customization, with the option t... Read more about Conecta Suite

Free Trial

Available

Pricing Type

$8.5 Per user

Location

Brazil

FractalScan Surface is a vulnerability scanner software designed to identify and assess security risks across IT environments. This software scans networks, applications, and cloud infrastructures to detect potential vulnerabilities, enabling organizations to address security gaps before they lead to breaches. FractalScan Surface provides real-time alerts and detailed reports on risk levels, allow... Read more about FractalScan Surface

Free Trial

Available

Pricing Type

Contact Vendor

Location

United Kingdom

NoSpamProxy is an advanced email security software designed to protect businesses from spam, phishing attacks, and malware. By analyzing incoming emails for potential threats, the platform prevents malicious content from reaching employees' inboxes. NoSpamProxy’s email filtering technology uses a combination of blacklists, whitelists, and advanced threat detection algorithms to block harmful ema... Read more about NoSpamProxy

Free Trial

NA

Pricing Type

Contact Vendor

Location

Germany

Spambrella is a comprehensive email management solution that focuses on enhancing email security, filtering spam, and improving email deliverability for organizations. This cloud-based software provides robust email protection by blocking unwanted messages, phishing attempts, and malicious content before they enter the corporate network. Spambrella uses advanced machine learning algorithms to cons... Read more about Spambrella

Free Trial

Available

Pricing Type

$1 Per month

Location

United States

SmartLockr is a robust email security software solution designed to protect organizations from a range of email threats while ensuring data confidentiality. This platform provides advanced encryption, secure file sharing, and anti-phishing capabilities to safeguard sensitive information transmitted via email. With its user-friendly interface, SmartLockr allows organizations to implement strong sec... Read more about SmartLockr

Free Trial

NA

Pricing Type

Contact Vendor

Location

Netherlands

SphereShield is an advanced email security software designed to protect businesses from email-based threats such as phishing, malware, and spam. With SphereShield, companies can safeguard their email communications and prevent cyberattacks that often target sensitive data and systems. The software uses advanced filtering and artificial intelligence (AI) to detect and block malicious emails before ... Read more about SphereShield

Free Trial

NA

Pricing Type

Contact Vendor

Location

Israel

StayPrivate is a cutting-edge email security software designed to protect your organization's communications from cyber threats such as phishing, malware, and spam. Utilizing advanced encryption technologies and real-time threat detection, StayPrivate ensures that all email communications are secure and confidential. The software offers robust filtering capabilities to block malicious emails befor... Read more about StayPrivate

Free Trial

Available

Pricing Type

$30 Per month

Location

United Kingdom

xorlab is a comprehensive email security software solution designed to protect organizations from email-based threats such as phishing, malware, and spam. The platform utilizes advanced threat detection algorithms and machine learning to analyze incoming emails and identify potential risks in real-time. xorlab provides features such as automated email filtering, encryption, and data loss preventio... Read more about xorlab

Free Trial

NA

Pricing Type

Contact Vendor

Location

Switzerland

Email encryption for small business.

NeoCertified is a comprehensive HIPAA compliance software tailored for healthcare organizations looking to safeguard patient information. This robust platform simplifies the process of securing sensitive data, ensuring that organizations meet regulatory requirements while maintaining patient confidentiality. With features like encrypted messaging, secure file sharing, and audit trails, NeoCertifie... Read more about NeoCertified

Free Trial

Available

Pricing Type

$99 Per year

Location

United States

Cypherdog Encryption is a cutting-edge email security solution designed to ensure the confidentiality of sensitive communications by providing end-to-end encryption. This platform encrypts emails and attachments in real-time, ensuring that only authorized recipients can access the content. Cypherdog’s encryption capabilities comply with global data protection regulations, making it an ideal choi... Read more about Cypherdog Encryption

Free Trial

Available

Pricing Type

$6 Per user

Location

Poland

DMARC Advisor is an advanced email security software designed to protect organizations from email-based threats, including phishing, spoofing, and unauthorized usage. It enables businesses to monitor and manage their domain-based message authentication, reporting, and conformance (DMARC) policies, providing greater control over email security. By implementing DMARC Advisor, companies can protect t... Read more about DMARC Advisor

Free Trial

Available

Pricing Type

$228 Per year

Location

Netherlands

SpamHero is a robust antispam software designed to protect organizations from unwanted email and enhance overall email security. With its advanced filtering technology, SpamHero effectively identifies and blocks spam, phishing attacks, and malware, ensuring that users receive only legitimate emails. The platform uses sophisticated algorithms and machine learning to adapt to evolving spam technique... Read more about SpamHero

Free Trial

Available

Pricing Type

$7 Per month

Location

United States

BooleBox is an innovative collaboration software designed to enhance team communication and streamline project management within organizations. This platform provides tools for file sharing, real-time collaboration, and task management, enabling teams to work together efficiently, regardless of location. With its secure environment, users can share sensitive documents while maintaining control ove... Read more about BooleBox

Free Trial

Available

Pricing Type

$12.5 Per user

Location

Italy

KDMARC is a robust email security software solution designed to protect organizations from email-based threats such as phishing, spoofing, and impersonation attacks. The software utilizes the Domain-based Message Authentication, Reporting, and Conformance (DMARC) protocol to verify the authenticity of incoming emails, ensuring that only legitimate communications are delivered to end-users. KDMARC ... Read more about KDMARC

Free Trial

Available

Pricing Type

$0.01 Per year

Location

United States

DropSecure is a robust file sharing software designed to help organizations securely share and manage sensitive documents and data. This comprehensive platform offers a suite of tools that facilitate file storage, sharing, access control, and auditing, ensuring businesses can maintain the confidentiality and integrity of their information. DropSecure’s user-friendly interface allows users to upl... Read more about DropSecure

Free Trial

Available

Pricing Type

$12 Per user

Location

United States

GoDMARC is an advanced email security software that helps businesses protect their email communications from phishing attacks, fraud, and impersonation. Built around the DMARC (Domain-based Message Authentication, Reporting & Conformance) protocol, GoDMARC allows organizations to implement strict email authentication policies, ensuring that only authorized senders can use their domain. The softwar... Read more about GoDMARC

Free Trial

Available

Pricing Type

$1150 Per user

Location

India

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