Email Security & Spam Filtering | Cloud SEG by Redstor

Always-on defence for every inbox

Redstor’s Email Security and Spam Filtering solution is a cloud-delivered Secure Email Gateway that filters all inbound and outbound mail before it reaches your users. No hardware, no patching, just always-on protection that blocks spam, malware, ransomware and malicious links at the gateway.

Effortless scalability
Built in the cloud, it deploys in minutes, scales instantly across every mailbox, and stays up to date without IT overhead.

Layered threat defence
Dual antivirus engines and advanced sandboxing detect and stop zero-day threats and evasive malware that traditional filters miss.

Advanced email protection

Stop spam at the source with a self-learning filter that adapts to new tactics. Redstor’s layered defences ensure inboxes stay free of unwanted and dangerous email.

Proven spam defence
Block nearly all spam, independent tests verify catch rates of up to 99.99% with extremely low false positives.

Smarter threat protection
Bayesian autolearning, heuristics and global intelligence feeds spot and block dangerous content before other tools even notice it.

Double antivirus shield

Two engines, one purpose, maximum malware detection. Redstore combines Bitdefender and ClamAV to stop threats other solutions miss.

Inbound email cleaning
All incoming emails are sanitised, removing malware, ransomware, and bad attachments before they reach users.

Superior detection
Dual-engine scanning consistently outperforms single-engine tools, offering broader and more accurate coverage.

Sandboxing for zero-day defence

Don’t wait for threats to become common. Redstor detonates suspicious files in a secure sandbox using AI and behaviour analysis for early detection of novel malware.

Deep behavioural analysis
Files are detonated in an isolated environment that mirrors production systems, catching evasive malware that tries to hide or adapt.

Superior threat capture
Combining sandboxing with advanced ML, decoys, and anti-evasion techniques, Redstor identifies zero-day attacks with minimal false positives.

Reinforce Microsoft 365 defence

Redstor adds a powerful, dedicated anti-spam layer to Microsoft 365, filling in gaps and boosting overall email security. The same protection extends seamlessly to Google Workspace, delivering a consistent security posture across both platforms.

Purpose-built filtering
Catch advanced spam and malware that native Microsoft 365 filters often miss.

Effortless deployment
Seamless integration with Active Directory or LDAP, setup in minutes with zero hassle.

Policy control

Take control of email flow with precision tools that manage trusted and unknown senders, and reduce spam without blocking valid mail.

Allowlisting and blocking
Confidently define which senders are permitted or denied

Greylisting
Temporarily reject unknown senders until they retry, cutting spam without losing legitimate mail.

Authentication & anti-spoofing
Enforce DMARC, DKIM and SPF to stop spoofed senders, prevent domain forgery, and strengthen trust in email delivery.

Frequently asked questions

Deployment takes just minutes. As a cloud-native solution, Redstor requires no hardware or endpoint installs, simply point mail flow through our Secure Email Gateway and protection starts immediately.

Yes. Redstor works seamlessly with Microsoft 365, Google Workspace, and other mail services, adding a critical layer of protection beyond native filters.

Redstor email protection is a cloud-native Secure Email Gateway that blocks spam, malware, ransomware and other malicious email threats before they reach users. Delivered entirely in the cloud, it requires no hardware or complex setup, just always-on protection that keeps your business safe and your inbox clean.

Redstor filters all inbound and outbound mail at the gateway. Using multi-layered defences, including real-time intelligence, dual antivirus engines, and behavioural analysis, it stops spam and malicious emails, protecting your people, data, and brand.

Traditionally, spam filters were physical appliances that sat between your mail server and your users’ inboxes. Redstor replaces that outdated model with a cloud-native solution, delivering stronger protection, faster deployment, and zero hardware to manage.

Yes, unfiltered email leaves your organisation exposed to malware, ransomware, and business disruption. Redstor anti-spam protection ensures only safe, clean mail reaches your users, reducing risk while cutting down on wasted time spent on junk mail.

Redstor combines multiple layers of defence, including real-time blocklists, recipient verification, SPF, DKIM, DMARC, dual antivirus scanning, and sandboxing. Together, these measures deliver powerful protection against spam, spoofing and malware.

Yes, Redstor applies advanced machine learning to spot new patterns of spam and malware, detecting threats that traditional signature-based tools miss and strengthening your resilience against evolving attacks.