| Feature/Benefit |
ZoEmail |
Filter-based |
| 100% effective blocking of unwanted
senders |
Yes |
No |
| Prevents unauthorized transfer of
addresses |
Yes |
No |
Effective against all unsolicited
e-mail |
Yes |
No |
| Complete end-user control |
Yes |
No |
| Avoids errors due to filtering based
on headers, addresses and/or content |
Yes |
No |
| Self-authentication checking for
fast delivery |
Yes |
No |
Unnecessary to store and review pending
file of bulk/unsolicited
e-mail for reliability |
Yes |
No |
| Ability to define duration, frequency
and other "access rights" |
Yes |
No |
| Maintenance requirements |
Low |
High |
| Scalability |
High |
High |
| Reduces Spam's impact on bandwidth,
storage and CPU usage |
Yes |
Possible,
but only with tradeoffs |
| Eliminates ISP liability for "false
positives" and "false negatives" |
Yes |
No |
| Loses Mail |
Never makes such an error |
Always
at risk |
| Permanent solution |
Permanent solution |
Temporary
at best |
| Costs to administer |
Permanently inexpensive |
Giant
and growing |
| Allows temporary address (e.g., online
purchases) |
Supports fully |
Can't
support at all |
| Can integrate with virus control |
Yes |
Yes |
| Identity protection |
Can fully support |
Can't
support this |
| Protects the user when he signs up
at a Website or for a newsletter |
Fully protects the user in all situations |
Can't
support this |
| Requires a 24/7 staff of pattern
matching experts |
No extra support staff is required |
Requires
an ever growing staff |
| Third party control |
Each user has full control |
3rd
party determines what is "spam" (differing
user requirements averaged) |
| Stability/predictability |
User in full control |
Filtering
criteria may change without notice |
