It's free—which is very appealing—but is it worth using versus Salesforce or another paid CRM? Was your team able to effectively use it for free without upgrading to HubSpot's paid plans?
Our team dabbled between several CRM's (Pipedrive, Zoho, Apto) prior to making the switch to Hubspot, but have really found their all-around tool easier to use. I believe if you're a larger team considering making the move over to Hubspot (say from Salesforce), you may find the limited customization features to be hindering, but for a smaller team just starting out or looking to streamline all client communication in one platform, you'll be very happy with Hubspot. One other thing to keep in mind : Hubspot was designed to be onboarded and customized internally (a cost-saver) vs. Salesforce, a tool that would likely require the help of an implementation specialist (additional cost) to help your team get up and running.