Integrated Hubspot to larger lead funnel through the API and external databases, and use bayesian machine-learning algorithms to target drip campaigns towards most probable real-estate customer segments by demographics. This was an ETL intensive project because of the need to important contact and property information and enrichments from multiple sources and turn into a cohesive list of de-duplicated leads.
The drip campaigns involved scheduled emails, sms texts, pre-recorded voicemails, post-cards, leading to appointments with regular sales people.