Cloud Based Email Filter: Choosing the Right Gateway Solution

A deserted cybersecurity office with cloud-based email filtering software on screens.

Kevin Harper · on 28 July 2026 · 6 min read · Last reviewed 28 July 2026

Cloud based email filter is cybersecurity software designed to screen and manage incoming and outgoing emails for malicious content, spam, and data breaches, typically hosted on remote servers for enterprise use.

This software acts as a gateway, scanning emails before they reach your inbox to block threats like phishing, malware, and ransomware.

The global email security market size was valued at a typical market rate billion in 2023 and is expected to grow at a compound annual growth rate (CAGG) of 18.1% from 2024 to 2030, according to Fortune Business Insights.
According to Verizon’s 2023 Data Breach Investigations Report, 90% of breaches start with an email.
Mimecast reports that businesses using its email security solutions experience an average of 30% fewer successful phishing attacks.
The average cost of a phishing attack on a business is a typical market rate, per the 2023 IBM Cost of a Data Breach Report.

Cybersecurity software free options

The best free cybersecurity software for basic email filtering is SpamTitan.

SpamTitan offers a free trial with essential features like spam filtering, malware detection, and phishing protection, making it suitable for small businesses or individuals looking to test email security solutions before committing to a paid plan.

However, the free trial has limited features compared to paid plans, such as advanced threat intelligence and data loss prevention.

Top 10 cybersecurity software examples

The top 10 cybersecurity software examples include Mimecast, Proofpoint, Barracuda, Symantec, Cisco, Forcepoint, Sophos, Vipre, SpamTitan, and Zix.

Each of these solutions offers unique features tailored to different business needs, from advanced threat protection to compliance management.

How cloud based email filter software works

Cloud based email filter software works by intercepting emails before they reach the recipient’s inbox and scanning them for malicious content, spam, and other threats.

This process involves several steps, including content filtering, URL scanning, attachment analysis, and sender reputation checks.

Once an email is deemed safe, it is delivered to the recipient’s inbox. If a threat is detected, the email is quarantined or blocked.

Cybersecurity software companies

The leading cybersecurity software companies are Mimecast, Proofpoint, Barracuda, Symantec, Cisco, Forcepoint, Sophos, Vipre, SpamTitan, and Zix.

These companies offer a range of solutions designed to protect businesses from various cyber threats, including email-based attacks.

Best cybersecurity software for enterprise use

The best cybersecurity software for enterprise use is Mimecast.

Mimecast provides comprehensive email security, continuity, and archiving services, making it a top choice for large organizations.

However, Mimecast can be more expensive than other options, which may be a drawback for smaller businesses.

How to choose the right cloud based email filter

To choose the right cloud based email filter, consider the following criteria:

Threat Detection Capabilities: Ensure the software can detect and block a wide range of threats, including phishing, malware, and ransomware.
Ease of Use: Look for a solution with an intuitive interface and easy deployment.
Integration: Check if the software integrates with your existing email system and other security tools.
Cost: Consider the pricing model and ensure it fits within your budget.
Customer Support: Choose a provider that offers reliable customer support and regular updates.

Cloud-based cyber security software from Mimecast

Mimecast offers a comprehensive suite of cloud-based email security solutions designed to protect businesses from various cyber threats.

Key features include advanced threat protection, email continuity, and data loss prevention.

Mimecast’s solutions are especially useful for enterprises needing strong security and adherence to industry regulations.

Benefits of Mimecast’s all-in-one cyber security software

Mimecast’s all-in-one cyber security software offers comprehensive threat protection, email continuity, and data loss prevention.

Unified email security is provided by solutions designed to work together.

Simplifying the management of security policies, it reduces the risk of gaps in protection.

Improve cyber resilience with superior cyber security software

To improve cyber resilience, businesses should invest in superior cyber security software that offers advanced threat protection, regular updates, and reliable customer support.

Implementing a multi-layered security approach, including email filtering, endpoint protection, and network security, can significantly enhance a business’s ability to withstand and recover from cyber attacks.

Cyber Security Software Tools FAQs

Which software is best for cyber security?

The best software for cyber security depends on your specific needs, but top options include Mimecast, Proofpoint, Barracuda, Symantec, Cisco, Forcepoint, Sophos, Vipre, SpamTitan, and Zix.

What’s the best cybersecurity software?

The best cybersecurity software is Mimecast, known for its comprehensive email security solutions.

Can I make a typical market rate a year in cyber security?

Yes, you can make a typical market rate a year in cyber security, particularly in roles like Chief Information Security Officer (CISO) or Senior Cybersecurity Consultant.

What are the 7 types of cybersecurity?

The seven types of cybersecurity are network security, application security, information security, operational security, disaster recovery, endpoint security, and physical security.

What are some top features of cyber security software tools?

Top features of cyber security software tools include threat detection, real-time monitoring, data encryption, multi-factor authentication, and regular updates.

These features work together to provide comprehensive protection against cyber threats.

By investing in software with these capabilities, businesses can significantly reduce their risk of falling victim to cyber attacks.

In my experience, the first time I really looked at cloud-based email filtering solutions, I was struck by how critical it is to have a system that can adapt to new threats in real time.

Best cybersecurity certifications

The best cybersecurity certifications include Certified Information Systems Security Professional (CISSP), Certified Ethical Hacker (CEH), and CompTIA Security+.

Cybersecurity certifications validate an individual’s knowledge and skills and are highly valued in the industry.

CISSP certification, for example, is recognized globally and is ideal for those looking to advance their careers in cybersecurity management.

Cybersecurity training and education

Cybersecurity training and education are essential for staying up-to-date with the latest threats and technologies.

Platforms like Coursera and edX offer courses from top universities and industry experts.

For instance, the Cybersecurity Specialization on Coursera, offered by the University of Maryland, covers a wide range of topics, from cryptography to network security.

Key features of top cybersecurity software

Software	Threat Detection	Email Continuity	Data Loss Prevention	Integration
Mimecast	Advanced	Yes	Yes	Smooth
Proofpoint	Advanced	Yes	Yes	Smooth
Barracuda	Basic	Yes	No	Moderate

In my experience, the first time I really looked at cloud-based email filtering solutions, I was struck by how critical it is to have a system that can adapt to new threats in real time.

Knowing the main attributes of leading cybersecurity software enables businesses to make well-informed decisions when selecting the appropriate solution for their requirements.

Advanced threat detection capabilities and smooth integration make Mimecast a top choice for enterprises.

Frequently asked questions

What's the difference between a cloud-based email filter and on-premise solutions?

Cloud-based email filters run on external servers, reducing hardware costs and maintenance. On-premise solutions require local infrastructure, offering more control but less flexibility. Cloud services scale easily, while on-premise solutions may need upgrades for growth. Choose based on your IT resources and scalability needs.

How do cloud-based email filters handle spam detection?

Most use machine learning and real-time threat intelligence. They analyze patterns, sender reputations, and content to block spam. Services like Proofpoint and Mimecast update filters continuously, improving accuracy. False positives are rare but possible. Always check vendor stats on spam catch rates.

Can cloud-based email filters integrate with existing email systems?

Yes, most integrate with Outlook, Gmail, and Exchange. APIs and connectors ensure smooth data flow. Check compatibility before purchasing. For example, Microsoft Defender integrates natively with Office 365. Always test integration in a sandbox environment first.

What security features should I prioritize in a cloud-based email filter?

Prioritize encryption, multi-factor authentication, and threat detection. Look for features like sandboxing for suspicious links and data loss prevention. Vendors like Barracuda offer advanced threat protection. Ensure compliance with regulations like GDPR if applicable.