Technology	Strength	Weakness	Best application	Privatemail Supported
Network Filtering	Bounces 90-98% of spam.  Installs instantly with zero setup effort.	Not 100% effective.	Salespeople and others that whose majority of email comes from previously unknown senders.	Yes.  Privatemail using Titan Key's patented Network filtering is unique and not available anywhere else.
Content Filtering	Filters 60-98% of spam	Not 100% effective. Incorrectly marks legitimate email as spam. Requires that spam is accepted first, then processed and stored.	We do not suggest you use content filters due to their low effectiveness.	No.  Our Network Filtering is superior in every way to content filtering.
Disposable email addresses	Bounces 100% of spam	If disposed, also bounces legitimate email. Cannot accept email from legitimate senders while bouncing spammers.	Newsletter registrations, order confirmation, submitting email address to untrusted Web sites.	Yes.
Network Challenge Response	Bounces 100% of spam	Some legitimate senders are unable or unwilling to go through the challenge process. Added effort to subscribe to newsletters and order confirmations.	Eliminating spam from old email addresses that you don't want to discard in order to continue receiving  email from existing contacts.	Yes.  Privatemail using Titan Key's patented Network Challenge Response is unique and not available anywhere else.
Client Challenge Response	Filters 100% of spam	Filters an unacceptably high percentage of legitimate email.	We do not suggest you use client-based challenge response systems due to their poor performance.	No.  Privatemail's Network Challenge Response is superior in every way.

Privatemail vs filtering

Feature	Privatemail  Bouncing	PC-Based Filtering
Bounce spam before it is received	Yes. Patented.	No. Filters must receive email first, then determine if it's spam
Never review spam folders	Yes	No.  All filtering systems either mark email as spam or place it in a quarantine folder for you to review.
Complete control of your email privacy	Yes	No.  Once your email address becomes public, anyone can send you all the email they want and the only thing you can do is filter it.
Avoid accidentally marking good email as spam ("False Positives")	Yes	No. Because filters are not perfect, they inevitably mark some portion of good email as spam.
Set and forget operation	Yes	No. Filters require periodic tuning for optimal performance in addition to regular review of the spam folder.
Save time downloading email	Yes	No. PC-based filters MUST download all email in order to filter it.  If you are on the road or over a dialup connection this takes a lot of time.
Immediate unsubscribe from any newsletter	Yes. Privatemail using Titan Key's patented process forces unsubscription	No. The best you can do is tag the newsletter so that next time it lands in the spam folder. You still receive it and still have to download it.
Automatically removes your email address from many spammer databases	Yes. Privatemail using Titan Key's patented process gradually removes you from their lists.	No.  Because your email address continues to work properly, it is bought and sold many times over to more and more spammers.
Bounce any sender you don't want	Yes. Patented.	No.  Your only option is to download it first and then delete.
Works with your Web mail feature	Yes.	No. Since the software installs on your PC, your Web mail inbox shows all the spam, unfiltered.

Privatemail vs Challenge/Response

Feature	Privatemail	PC-based Challenge Response
Bounces spam before it is received	Yes. Patented.  Privatemail bounces email from unwanted senders before they have a chance to send the email.	No. Filters must receive email first and then s