Francis I use company website as identifier, write it to other table and lookup the contacts table to get all the contacts
Then I map first contacts and add to the campaign
Repeat the same process for second and third contacts at the same company
I just use the company website to enrich with a “Get Company by Domain” type action, then link it back to contacts using that. Super handy for grouping leads by company!
Using Company Website to Identify and Map Contacts for Campaigns | Clay