Stop certain Salesforce leads / contacts from being created in HubSpot

[lizzienom]

Exploring whether it would be possible to have an 'exclusion' list (or similar) for Salesforce whereby leads / contacts that meet that criteria (would be deduced by a field) aren't created in HubSpot. Is this possible? 

[bradmin · Accepted solution]

Hi, @lizzienom. This guide can show you how to accomplish this, but it's a nontrivial setup.