KoruMail Cloud Alternatives: Top 10 Email Anti-spam Software in 2025

MailChannels Outbound Filtering is a cloud-based SMTP relay service which identifies and blocks spammers to ensure reliable email delivery. With Outbound Filtering, user can eliminate email delivery problems caused by IP address blocklisting. Automatically shut down compromised accounts and scripts to improve your security.

MailCleaner Open-source Edition filtering technology is based on a group of sophisticated filtering technologies that work together. Users maintain total control over quarantine behavior: With a simple click, a user ...

Junk mail is any physical mail that user receive at home that user didn't ask for. This can include prescreened credit card offers, company catalogs, and service offers like cable and internet providers. Junk mail accounts for 33% of all mail delivered in the United States.With just a few clicks, help save millions of tons of unwanted snail mail ending up in landfills by opting household out forever, guaranteed.

Check Point Anti-Spam & Email Security provides comprehensive protection for messaging infrastructure. A multidimensional approach protects email

Symantec Mail Security for Microsoft Exchange (SMSMSE) combines anti-malware technology with advanced heuristics and file reputation. SMSMSE provides real-time protection for email against viruses, spyware, phishing, and other malicious attacks.

Find out how an email isolation solution allows users to safely access personal email without unintentionally introducing new threats into an organization.

Protect your organization from today’s advanced email threats, business email compromise (BEC), and consumer phishing with Proofpoint's Email Fraud Defense.

Get Apex One™ Endpoint Protection and Security with the broadest range of capabilities, including high fidelity machine learning and advanced ransomware protection.

Comprehensive mail server security that blocks malicious emails while providing real-time protection and email reputation services.

Intermedia Hosted Exchange provides a comprehensive cloud-based Microsoft Exchange Online experience. Highlights include versatile security options and white glove email migration support. Exchange Email is one of 30+ essential business applications from Intermedia. With a single control panel, your cloud is easier to use and more efficient to manage.

Over 90% of targeted ransomware attacks start with a spear phishing attack. But with a single appliance, you can detect and block targeted attacks.

SPAMfighter is a global provider of state-of-the-art computer, mobile and server utility and security products to millions of users from 235 countries.

Spambarrier ist ein Dienst, der Ihre E-Mails filtert, bevor sie Ihren Mailserver erreichen. Der einfache Weg, sich vor Spam zu schützen Hosting sicher in Deutschland und datenschutzkonform.

ScanMail suite for IBM Domino provides comprehensive mail server security with real-time protection and streamlined administration that blocks emails with links to malicious sites.

Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterprise platform that will enable a messaging roadmap.

This always-expanding portfolio of security & identity products can help your enterprise meet policy, regulatory, and business objectives.

Clearedin provides cloud security, compliance and phishing prevention across all popular B2B chat, email, collaboration and file sharing software. This SaaS offering solves the growing and costly enterprise problem of both collaboration and email security. Clearedin delivers the platform's powerful multi- vector phishing capabilities through the patented Identity Trust Graph.

Microsoft Defender for Office 365 is a cloud-based email filtering service that helps protect your organization against unknown malware and viruses by providing robust zero-day protection, and includes features to safeguard your organization from harmful links in real time.

The Outbound Spam Guard (OSG) is a carrier-grade solution that can be easily deployed to scan and block up to 99% of all unwanted or malicious outbound email traffic.

All features that makes our cloud email protection solution for businesses as secure, accurate and utterly simple as it is. See for yourself!