During the waterfall enrichment, how do I enforce that the enriched emails are coming in from the main domain?

You're right - there isn't a built-in way to enforce that enriched emails match the exact company domain during waterfall enrichment. [clay.com The waterfall uses the company domain as input but email providers return whatever valid work emails they find for that person, which might be from subsidiary domains or different email structures that larger companies use. [clay.com Your best option would be to add a filter column after the waterfall runs to check if the email domain matches your target domain, then only keep results that meet your criteria. [clay.com