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Hmmm.

1. How do I know you are who you say you are? (You don't identify yourself).

2. How do I know that you will do what you say you will do? (The website says says nothing).

3. How do I know that all spammers, worldwide, will do what you tell them to do and delete my email address from their databases permanently and forever? (Are you God?)

I'm sorry, but color me skeptical. Here's what I would want to see before accepting your offer:

A. Tell me who you are.

B. Tell me why I should trust you.

C. Tell me what you will do for me.

D. Tell me why you will succeed while Google, Barracuda, and countless other juggernauts have failed to keep spam out of my inbox.

"They sell you the benefits and give you the harms for free."

Your HN post sells me the benefits (no spam). That means you're giving me the harm for free. I don't know what harm is bundled with your benefits, so I will pass on buying the benefits.