I verified about 1000 emails or so using Zerobounce and 700 came back as "valid" once I put them in the campaign I had over a 2.5% bounce rate. I reached out to support and they said they were catch all emails that cannot be 100% verified.... Fine, I get that BUT WHY would you return a VALID STATUS.

That makes no sense to me. I won't be using zero bounce ever again.