- 0Spam.com - Free antispam service for pop, Yahoo, and Hotmail accounts supporting multiple languages.
- Activator Mail - Virus scanning and spam prevention based on blacklists and user feedback.
- AppRiver - An email security company offering hosted spam and virus protection and a scanning engine especially for OEMs. Also offers Exchange hosting.
- ASSP - Anti-Spam SMTP Proxy implementing platform independent email filtering services.
- ASSP Deluxe for cPanel - A set of php scripts to install and configure ASSP on a cPanel server.
- BopSpam - Online POP3 bayesian filtering service.
- Clapf - An open source email content filter application. Clapf is a modular statistical antispam application with an interface to popular antivirus programs.
- CleanMyMailbox - Whitelist-based service that automatically "cleans" mailboxes of unwanted email multiple times per hour.
- CTScleanmail - Managed enterprise quality spam and virus filtering service.
- CudaMail - Hosted service filters spam and viruses before they reach your network. This type of filtering can increase security, save bandwidth and reduce the load on your email server.
- Dicontas - UK based provider of email filtering, email monitoring and centralized administration services for business users.
- Distributed Checksum Clearinghouse - System of clients and servers that collect and count checksums of email messages in order to detect and filter bulk UCE.
- E-Mail Magician - Automates filter, mailbox, and nickname creation for Eudora Macintosh. Filters on more than 1,000 spam characteristics.
- Eliminate Spam - Services to stop spam, viruses and control web access. Firewall installation and setup to prevent server/network security breaches.
- Email Systems - Fully managed service which filters viruses, worms and malicious macros and spam. Firm with offices in UK, France and Sweden.
- FakeMX - Providing a service to temporarily reject mail directed at low priority servers.
- Filterspam - Spam filter service designed to protect children from junk emails.
- Habeas - Focuses on identifying, classifying, tagging and monitoring legitimate email.
- Katharion - Provides spam and virus filtering services that keep unwanted mail off the network.
- MailArmory - Spam and virus defense for businesses and service providers.
- MailCleaner - Protection against viruses spam. Swiss company with large network of integrators worldwide.
- Mailprotector - Australian hosted spam filtering service with a 30 day trial. No hardware, no software required. Also offers POP3, web and Exchange hosting.
- Mailprotector - A hosted spam filter and managed email security service. Also offering Hosted Exchange and web security services.
- MailSentry - Australian company offering a managed service with protection from viruses, spam, malware, phishing and unwanted content.
- Mailshell - Offers protection against spam, combined with personalization and privacy for individual email users.
- MailShield - Australian company offers a managed service with protection from viruses, spam, malware, phishing and unwanted content.
- Messagecleaner - UK Company offering a service to remove viruses and spam mail before they reach your computer.
- MIMEShield - Runs as Domino server task, No template customizations, supports blacklists/whitelists, Spam email categorization, Electronic fingerprinting, Supports multiple Maps/RBL blacklists, Auto whitelist generation on outbound SMTP traffic. [traffic.]
- MX Force - Enables VARs, OEMs, and ISPs to provide world-class managed email security services.
- MX Lab - A Belgium based company that blocks virus threats and unwanted emails through MX redirection. Also provides archiving and backup services.
- MX Police - Managed anti-spam, virus and malware protection.
- MXLogic - Protects your entire domain from spam and viruses. No software to install or maintain.
- NuXo Technologies - Provides redundant managed email filtering services: protection against spam, virus and failure without changes to the existing installation.
- Online Spam Solutions - Managed spam blocker and filtering service for small businesses. Blocks spam and viruses through MX redirection. A 30 day free trial is offered.
- OnlyMyEmail - Managed email filtering. Blocks spam, phishing and viruses before they reach your network. Solutions for corporate, personal and children's protection. Hosting and free trial available.
- Peer-to-Peer - Anti-Spam gateway which filters out spam and viruses for an entire domain. A 30-day free trial is offered.
- Pyzor - Open source collaborative spam filtering system using digests of messages to identify spams.
- Razorspam - Hosted spam blocking service. No software to install, free trial available.
- Realmailonly - Email Spam filtering service for businesses. Mailboxes available.
- Red Condor - Stops spam before it reaches your network. Managed spam filtering service blocks spam, viruses, spyware, and phishing schemes. A 30 day free trial is offered.
- Remote Anti Spam - A hosted anti spam filtering service providing simple, anti spam, phishing and virus protection.
- RMX - SMTP anti-forgery protocol - Filtering protocol verifying the sender address through authorization records made available in DNS to prevent address forgery.
- Safentrix - Offers a free (ad supported) and enterprise email security solutions, to blocks spam, virus and malware.
- Securence - Managed spam service offering anti-spam and anti-virus filtering technologies.
- Sender Policy Framework (SPF) - Framework for publishing information through DNS describing a list of ip addresses allowed to send emails from a specific domain.
- SODA3 - Mobile email filtering service for POP3. Filters your view of your mailbox so you only see email from important senders on your mobile device.
- Sophos PureMessage - Email management solution that provides full control over security and usage of corporate email systems.
- Spam Arrest, LLC - POP3 service that blocks spam using sender verification methods.
- Spam Cop - Spam reporting service.
- Spam Filtering for Mail Exchangers - Document offers detailed discussion on how to filter junk mail in incoming SMTP transactions.
- Spam Manager Professional - Spam Manager Professional is a windows based gateway filter for SMTP email servers. This filter uses DNSBL Servers to reject junk or spam mail coming from blacklisted servers.
- Spam Safe Mail - Network email scanning and filtering service that removes junk emails at the network level before they are delivered to your mailbox.
- Spam Soap - Managed spam service featuring message store/forward, message archiving, and administration at both end user and domain levels.
- SpamButcher - Fuzzy-logic software based anti-spam filter for Windows systems.
- SpamCerbere - Offers spam protection that doesn't require any installation. Based on a challenge-response system. Free service.
- SpamDrain - Swedish company filters individual POP3 and IMAP accounts as well as entire domains. No software installations required. Offers a 30-day trial.
- Spamela - Protects your e-mail system and network from spam and other malicious communications.
- SpamFilter for ISP - Proxy software for incoming mail.
- SpamStopsHere - An email filtering service for businesses or individual domains. 30 day trial offered.
- SpamTrap - Fully-managed antispam solution and antivirus service.
- SpamTrap - Australian POP3 email spam filtering service requiring no software.
- Styopkin Antispam Scanner - Removes unwanted email messages from your email server.
- The Email Laundry - Spam filtering service to block spam and viruses by domain.
- The Spam Eater - Checks your existing POP3 email account every ten minutes and filters spam and viruses. A 30 day free trial is offered.
- Vipul's Razor - Collaborative spam filtering network allowing users to report and filter out matching spam.
- xQmail - Dutch company offering managed hosted or dedicated virus and spam filtering, works through mx redirection. Free 30-day trial is offered.
