Probably, implies Return Path based on a correlation between a typical Spamhaus blacklisting and drop in inbox delivery rates at Gmail. I think it's safe to assume that Google does use Spamhaus data for some sort of reputation calculation impacting Gmail deliverability.
Probably, implies Return Path based on a correlation between a typical Spamhaus blacklisting and drop in inbox delivery rates at Gmail. I think it's safe to assume that Google does use Spamhaus data for some sort of reputation calculation impacting Gmail deliverability.