What are some alternatives?
When comparing Scrollout F1 and Mailwasher, you can also consider the following products
MailScanner - MailScanner is a open source email security system design for Linux-based email gateways.
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.
Spamfence.net - Professional e-mail security free for private use: With Spamfence.