HubSpot is an inbound marketing and sales platform that helps companies attract visitors, convert leads, and close customers. Hubspot used this Free software onboarding email sequence to inform new subscribers about the benefits and possibilities of Hubspot CRM.
Hubspot designed a FB ad that leads you to an optin page, where you can register for a free software tool; CRM. Next they introduce another tool called Sidekick; and keep on emphasizing the benefits of HubSpot CRM. In the last email they ask about the probability that you will keep on using HubSpot CRM.
You can read more about Hubspot here: https://www.hubspot.com/