Technology FAQ
- What's wrong with filters?
- Is spam really a problem?
- Is there a technology that stops spam without blocking legitimate e-mail?
- What is a "false positive"?
- Aren't some filters better than others?
- My filter works fine – why should I buy Sendio's ESP?
- What about "reputation management" systems to filter out e-mails?
- I'm an IT manager, and I spend a lot of time trying to fight spam. Isn't there a better way to eliminate unwanted e-mails?
- What makes Sendio different?
- Is Sender Address Verification the same as challenge-response?
- How does Sender Address Verification work?

