I wanted to suggest this one for a few reasons:
Hubspot has a very similar in-app communication messenger to Intercom. So you could get the same Feature Feedback potential that is currently a cornerstone of the Product Team Workspace (Fibery Product Workspace) with the integration of the Intercom conversations from customers, which are later synthesized into Fibery for Feature Prioritization.
Hubspot has a nice CRM + Email function, so you’d be able to use those, hopefully integrating with some CRM capability in Fibery - and handle some of the ask in here around Emailing. And since Fibery itself is not using Fibery for Sales Reachout, this is a chance to integrate an outside tool that does that as I’ve never heard of Snov.io and I doubt it will be as widely-used by potential Fibery newcomers as Hubspot.