Challenge / Response Spam Filtering Software and Services
Spam-free email, and without effort. At least that's what challenge/response spam filtering software and services promise. Find out whether they meet these claims in these reviews.
(STEVEN)
(STEVEN) blocks a lot of spam by making sure only mail from authorized senders with a valid From: address gets through. (Windows)
(STEVEN) blocks a lot of spam by making sure only mail from authorized senders with a valid From: address gets through. (Windows)
0Spam.com Review
0Spam.com is a very convenient spam filtering service that cleans your email of all mail from non-approved senders before you download it.
0Spam.com is a very convenient spam filtering service that cleans your email of all mail from non-approved senders before you download it.
Affini
Affini takes care of spam by requiring senders to either be authorized or prepared to pay per message delivered to an Affini member.
Affini takes care of spam by requiring senders to either be authorized or prepared to pay per message delivered to an Affini member.
Bluebottle - Free Email Service
Bluebottle offers email accounts that are practically free of spam (using challenge/response filtering) and can be accessed on the web or using POP with any email program.
Bluebottle offers email accounts that are practically free of spam (using challenge/response filtering) and can be accessed on the web or using POP with any email program.
eTrust Anti-Spam
eTrust Anti-Spam allows only mail from approved senders to your Inbox, checks sender credentials to warn about phishing attempts and lets you search your emails quickly, too. (Windows)
eTrust Anti-Spam allows only mail from approved senders to your Inbox, checks sender credentials to warn about phishing attempts and lets you search your emails quickly, too. (Windows)
MailFrontier Desktop
MailFrontier Desktop combines multiple anti-spam techniques to get the best possible spam protection. (Windows)
MailFrontier Desktop combines multiple anti-spam techniques to get the best possible spam protection. (Windows)
Merak Mail Server
Merak Mail Server is a complete, capable and secure mail server that can adapt to all mailing needs gracefully and integrates server-side Bayesian spam filtering as well as instant messaging. (Windows)
Merak Mail Server is a complete, capable and secure mail server that can adapt to all mailing needs gracefully and integrates server-side Bayesian spam filtering as well as instant messaging. (Windows)
QuarantineMail
Get rid of practically all spam with QuarantineMail, a Outlook plug-in that implements a radical approach to eliminating spam. (Windows)
Get rid of practically all spam with QuarantineMail, a Outlook plug-in that implements a radical approach to eliminating spam. (Windows)
Spam Bully
Spam Bully is a great and efficient anti-spam tool. If you train it well, Spam Bully can rid your Inbox of unwanted emails almost completely. (Windows)
Spam Bully is a great and efficient anti-spam tool. If you train it well, Spam Bully can rid your Inbox of unwanted emails almost completely. (Windows)
Spam Interceptor
Spam Interceptor is an elegant, easy to use and flexible, but most of all effective spam filtering solution.
Spam Interceptor is an elegant, easy to use and flexible, but most of all effective spam filtering solution.
Spam Sleuth
Spam Sleuth is a comprehensive anti-spam tool, and thanks to its Bayesian filtering it can also be very effective against junk email.
Spam Sleuth is a comprehensive anti-spam tool, and thanks to its Bayesian filtering it can also be very effective against junk email.
Tonsho - Free Challenge/Response Spam Filtering Service
Tonsho lets you send big files (up to 100 MB) by attaching them to emails as usual no matter the email size supported by the recipient; challenging senders to one POP account to prove they're not spammers, Tonsho can filter junk mail, too.
Tonsho lets you send big files (up to 100 MB) by attaching them to emails as usual no matter the email size supported by the recipient; challenging senders to one POP account to prove they're not spammers, Tonsho can filter junk mail, too.
spamPepper
spamPepper is a very clean and efficient spam filtering tool. It uses challenging messages to block about all spam. (Windows)
spamPepper is a very clean and efficient spam filtering tool. It uses challenging messages to block about all spam. (Windows)
Vanquish vqME Personal Anti-Spam
Personal vqME Anti-Spam keeps your email Inbox free of unwanted mail by accepting messages only from approved senders or if a cash guarantee — which you can claim if the message is unwelcome — is included.
Personal vqME Anti-Spam keeps your email Inbox free of unwanted mail by accepting messages only from approved senders or if a cash guarantee — which you can claim if the message is unwelcome — is included.
WinAntiSPAM
WinAntiSPAM is a simple challenge-response spam fighting tool that works as a POP proxy. (Windows)
WinAntiSPAM is a simple challenge-response spam fighting tool that works as a POP proxy. (Windows)
Zaep
Zaep can help your home or organization get pretty much spam free by allowing only mail from whitelisted senders through. (Windows)
Zaep can help your home or organization get pretty much spam free by allowing only mail from whitelisted senders through. (Windows)