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

  • All Software All Software

213 Software

Popular Picks in Email Security Software

Abnormal Security

Abnormal Security

peruser

Barracuda Email Security Gateway

Barracuda Email Security Gateway

peruser

Cisco Secure Email

Cisco Secure Email

perfeature

List of Top Web-Based Email Security Software

Pricing Options

Monthly Subscription

Annual Subscription

One-Time Payment

Quote Based

Features

No Features

Company Size

Self Employed

Small Business

Medium Business

Enterprise

I'm looking for Email Security Software that is:

DekkoSecure is a file sharing software that provides organizations with secure tools for sharing sensitive documents, collaborating on files, and protecting data integrity. The platform offers features for encryption, access control, and audit trails, ensuring secure data exchange. DekkoSecure’s analytics provide insights into file access history, user activity, and security events, helping IT t... Read more about DekkoSecure

Free Trial

Available

Pricing Type

$100 Per month

Location

Australia

servermx is a robust email management software designed to streamline and enhance your email communications and administrative tasks. This platform offers tools for email filtering, automated responses, and inbox organization, ensuring that your email workflow is efficient and clutter-free. With features like bulk email processing, customizable templates, and advanced search capabilities, servermx... Read more about servermx

Free Trial

Available

Pricing Type

$12 Per user

Location

Italy

Skysnag is an advanced email security software solution designed to protect organizations from email-based threats, such as phishing, malware, and spoofing. With the rise of cyberattacks targeting organizations through email, Skysnag offers robust protection by filtering and analyzing inbound email messages in real time. The software uses machine learning and artificial intelligence to detect susp... Read more about Skysnag

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

@Securemail Plus is an advanced email security software designed to protect your organization’s email communications from a wide range of cyber threats. It offers comprehensive features including spam filtering, malware detection, phishing protection, and data loss prevention (DLP), ensuring that your email infrastructure remains secure and compliant. @Securemail Plus utilizes sophisticated algo... Read more about @Securemail Plus

Free Trial

NA

Pricing Type

Contact Vendor

Location

Japan

SecurePIM is a leading mobile device management (MDM) software that ensures the security and management of mobile devices within organizations. Designed for businesses of all sizes, SecurePIM enables IT departments to implement robust security measures, manage applications, and enforce compliance policies. The software provides a secure container for business data, ensuring that sensitive informat... Read more about SecurePIM

Free Trial

Available

Pricing Type

Contact Vendor

Location

Germany

MailSafi is a cutting-edge email security software designed to protect organizations from email-based threats such as phishing, malware, and spam. This platform provides robust filtering and monitoring capabilities that ensure incoming and outgoing emails are secure and compliant with organizational policies. MailSafi features advanced threat detection algorithms that identify suspicious email pat... Read more about MailSafi

Free Trial

NA

Pricing Type

Contact Vendor

Location

Kenya

PlayBackMail is a sophisticated email security software designed to protect organizations from email-based threats and enhance communication security. This platform provides advanced filtering capabilities to detect and block spam, phishing attempts, and malicious attachments, safeguarding users from potential cyber threats. PlayBackMail features an intuitive dashboard that allows administrators t... Read more about PlayBackMail

Free Trial

Available

Pricing Type

$150 Per user

Location

Japan

Sendmarc is an email security software designed to protect organizations from phishing, spoofing, and other email-based cyber threats. By using advanced authentication protocols like DMARC, SPF, and DKIM, Sendmarc helps prevent malicious actors from impersonating your organization and sending fraudulent emails. The platform also provides detailed reporting and analytics, allowing businesses to mon... Read more about Sendmarc

Free Trial

Available

Pricing Type

$45 Per month

Location

South Africa

MXGuardian is a comprehensive email security solution designed to protect businesses from malicious emails, phishing attacks, and spam. This software offers advanced threat detection, filtering, and monitoring capabilities to safeguard against email-borne security threats. MXGuardian uses AI and machine learning to detect and block harmful attachments, suspicious links, and spam, reducing the risk... Read more about MXGuardian

Free Trial

Available

Pricing Type

$0.55 Per user

Location

United States

Sealit is an email security software designed to protect businesses from phishing, malware, and other email-based threats. The platform offers advanced encryption, anti-spam filters, and real-time threat detection, ensuring that sensitive email communications are secure. Sealit also provides features for email tracking, authentication, and compliance, helping businesses protect both their data and... Read more about Sealit

Free Trial

Available

Pricing Type

$10 Per user

Location

United Kingdom

World First Visual AI Based Malware Detection

INLYSE Malware.AI is an advanced antivirus software powered by artificial intelligence (AI) to protect devices from malware, viruses, and other cyber threats. The software uses machine learning algorithms to detect and block threats in real-time, offering proactive protection against known and unknown malware. INLYSE Malware.AI continuously monitors network activity, analyzing files, emails, and w... Read more about INLYSE Malware.AI

Free Trial

Available

Pricing Type

$2.5 Per user

Location

Germany

ProxiedMail is a comprehensive email security software solution designed to protect businesses from cyber threats such as phishing, malware, and spam. The platform acts as an email gateway, filtering inbound and outbound messages to ensure that only legitimate emails reach your inbox. ProxiedMail uses advanced algorithms and threat intelligence to detect and block suspicious emails, preventing dat... Read more about ProxiedMail

Free Trial

NA

Pricing Type

Contact Vendor

Location

Portugal

Cloudphish is an advanced email security software designed to protect organizations from phishing attacks and email-based threats. This platform provides tools for threat detection, real-time monitoring, and incident response, ensuring that businesses can safeguard their sensitive information. Cloudphish features an intuitive interface that allows users to manage security settings, monitor email t... Read more about Cloudphish

Free Trial

Available

Pricing Type

$1.99 Per month

Location

United States

365 Alert is a comprehensive email security software designed to protect organizations from email-based threats and ensure the confidentiality and integrity of their email communications. The platform offers a wide range of tools for spam filtering, phishing detection, malware protection, and data loss prevention, safeguarding your email system against malicious attacks and unauthorized data acces... Read more about 365 Alert

Free Trial

Available

Pricing Type

$120000 Per feautre

Location

Japan

FileCap is an email security software that focuses on secure file transfer and encrypted email communication for businesses. The platform’s end-to-end encryption ensures that sensitive files and messages remain protected from unauthorized access during transmission. FileCap’s customizable security settings allow users to set expiration dates, access permissions, and download limits for shared ... Read more about FileCap

Free Trial

Available

Pricing Type

$9.84 Per month

Location

Netherlands

Sentry Email Defense Service is a robust email security software designed to protect organizations from evolving cyber threats. This comprehensive platform utilizes advanced filtering techniques to detect and block spam, phishing attempts, and malware, ensuring that only legitimate emails reach users' inboxes. Sentry's real-time threat intelligence updates continuously enhance its ability to comba... Read more about Sentry Email Defense Service

Free Trial

Available

Pricing Type

$1 Per month

Location

NA

Encrypted email you can trust

Atomic Mail is an email provider with a focus on security and privacy of personal data with encryption function. All basic mail functions, including encryption, will always be free for users. The unique Atomic mail filter protects against any trash mails. Together with the hide-my-email and Aliases functions, it completely eliminates mail clogging. Atomic Mail offers 2-Factor Authentication (2FA) ... Read more about Atomic Mail

Free Trial

NA

Pricing Type

Free

Location

Estonia

EuropeanMX is a robust Email Security Software designed to protect organizations from email threats, ensuring the safety and integrity of their communication. It provides comprehensive solutions for filtering spam, phishing attacks, malware, and other cyber threats, allowing businesses to maintain secure email environments. EuropeanMX employs advanced algorithms and machine learning technologies t... Read more about EuropeanMX

Free Trial

Available

Pricing Type

$4.9 Per month

Location

Germany

NullBox is an advanced email security software that protects businesses from email-based threats like phishing, malware, and spam. By using industry-standard encryption and filtering technologies, NullBox secures email communications, safeguarding sensitive information and maintaining the integrity of business communications. It offers proactive threat detection, identifying and blocking potential... Read more about NullBox

Free Trial

NA

Pricing Type

Contact Vendor

Location

United States

Email Encryption Solution is a powerful email security software designed to protect sensitive information from unauthorized access. It encrypts email messages, attachments, and metadata, ensuring that communications remain private and secure. The software is particularly valuable for industries that handle confidential data, such as healthcare, finance, and legal services, providing robust encrypt... Read more about Email Encryption Solution

Free Trial

NA

Pricing Type

Contact Vendor

Location

China

CipherMail is a robust email security software designed to protect sensitive communications through advanced encryption and authentication features. It secures emails by encrypting both incoming and outgoing messages, preventing unauthorized access and safeguarding confidential information. CipherMail supports a range of encryption standards, including S/MIME, OpenPGP, and TLS, providing flexible ... Read more about CipherMail

Free Trial

Available

Pricing Type

$500 Per one-time

Location

Germany

SimpleDMARC is a powerful email security software that protects businesses from phishing attacks, domain spoofing, and other malicious email threats. It leverages Domain-based Message Authentication, Reporting, and Conformance (DMARC) technology to help organizations authenticate their emails and ensure that only legitimate messages are delivered to recipients. SimpleDMARC enables businesses to co... Read more about SimpleDMARC

Free Trial

NA

Pricing Type

$99 Per year

Location

India

MX Layer is an advanced email security software that helps organizations protect against phishing, spam, and malware threats. The platform uses machine learning algorithms and threat intelligence to identify and block suspicious emails before they reach inboxes. MX Layer’s filtering capabilities ensure that legitimate communications are not disrupted, while its real-time alerts and reporting too... Read more about MX Layer

Free Trial

Available

Pricing Type

$0.1 Per user

Location

United States

Clean Mailbox is an advanced email security software designed to protect businesses from email threats such as spam, phishing, and malware. With its powerful filtering and detection algorithms, Clean Mailbox blocks harmful emails before they reach employees’ inboxes, reducing the risk of security breaches and data loss. The software provides real-time protection, scanning incoming emails for sus... Read more about Clean Mailbox

Free Trial

Available

Pricing Type

$1 Per user

Location

France

Janusmail is a robust email security software designed to protect businesses from potential email threats, including phishing, spam, malware, and spoofing. The platform utilizes advanced algorithms and machine learning techniques to scan incoming and outgoing emails for malicious content, providing real-time protection. Janusmail offers comprehensive encryption features to safeguard sensitive data... Read more about Janusmail

Free Trial

NA

Pricing Type

Contact Vendor

Location

Italy

No buyer guide found.