I'm reading the ZeroBounce docs and it seems very relevant. Look at this step:
"We recheck all unknown emails using IPs from different geographical locations". This matches exactly what this article describes as getting these emails from a range of locations.
The step before that is just "Proprietary Technology", which sounds like a good cover for what's going on here. How else are you testing an email address after between "real time SMTP server check"?
Comments
I'm reading the ZeroBounce docs and it seems very relevant. Look at this step:
"We recheck all unknown emails using IPs from different geographical locations". This matches exactly what this article describes as getting these emails from a range of locations.
The step before that is just "Proprietary Technology", which sounds like a good cover for what's going on here. How else are you testing an email address after between "real time SMTP server check"?