| Eudora | Free opensource email client for download |
| GMX | Hier können Sie eine kostenlose email-Adresse bekommen. |
| Spamfilter | Procmailscript, das Unerwünschte E-Mails zentral automatisch ausfiltert. |
| Scalix | Kostenloses E-Mail-System für unbegrenzten Einsatz in Unternehmen |
| Thunderbird | Download des kostenlosen email-Programms |
| Spamhaus | Tracks Spammers, provides anti-spam protection for Internet networks and works to identify and pursue spammers worldwide |
| Mulberry | Free IMAP and other email protocols client with calendaring and scheduling for download for Mac OS X, Windows and Linux. |
| Sophos | Software and appliance solutions to protect networks from viruses, Trojans, worms, spyware and spam |
| Angstklauseln | Sammlung von über 100 e-mail disclaimern, welche oft an E-Mails angehängt werden, wenn es um vertrauliche Inhalte geht |
| SenderBase | Report of spam mail traffic and virus traffic. |
| DNS whitelist | Whitelist of known legitimate email servers to reduce the chances of false positives while spam filtering |
