In this episode of Inside Partnering, I talked with longtime partner leader Mike Stocker, now VP of Partnerships at CallRail, live from the bustling show floor at HubSpot INBOUND 2025 in San Francisco.

Mike’s deep experience across companies like Marketo, Meta, RollWorks, and now CallRail gives him a unique lens into how partnerships are evolving - especially in an AI-powered, agency-centric world. And this year, CallRail came to INBOUND with a bold story to tell.

CallRail’s AI-Powered Future

CallRail is well-known for its call tracking and analytics platform, but Mike shared how they’ve moved decisively into the AI space, with a new product called Voice Assist - an intelligent agent that answers inbound calls using historical data and real-time website content.

“We launched Voice Assist and immediately had thousands of customers raise their hands,” Mike said. Even more compelling: their HubSpot integration brings the AI-driven call data directly into the CRM, extending value to mutual customers.

This combination - AI-driven engagement plus deep CRM connectivity - sets the stage for smarter media buying, more responsive lead qualification, and better customer outcomes, especially for CallRail’s 7,000+ agency partners.

7,000 Agencies Can’t Be Wrong

Agencies now drive over 50% of CallRail’s business, and Mike’s team isn’t just maintaining those relationships - they’re actively investing in them. From the recently launched MDF program to a new CallRail Community and CallRail Classroom, Mike sees partner enablement as a core lever for growth.

As agencies grapple with the rise of AI and increasing pressure to prove marketing impact, tools like CallRail help them show results, stay relevant, and scale offerings.

Mike put it simply: “It’s win-win-win for everyone involved.”

The 4 Lenses of Partner Impact

One of the highlights of our conversation was Mike’s framework for how partners create value. It’s one he’s shared in past interviews - and it’s still as relevant as ever:

* Co-Marketing – Top-of-funnel awareness and lead gen.

* Product Capabilities – Through integrations that expand use cases.

* Net-New Sales – Referrals and resale driving new revenue.

* Retention – Stickier customers who stay longer and grow.

Mike emphasized: “Partners help across all four. And when evaluating a new partnership, look for impact on more than one of those lenses.”

Iterate Like a Startup

A recurring theme in our chat: partnerships are products.

“You can’t just launch an integration and forget it for 3 years,” Mike said. “You need feedback loops. You need iteration. It’s like a business within a business.”

That mindset - agile, customer-centric, and iterative - is what makes CallRail’s partnership strategy both strategic and scalable.

Wrapping Up

Mike’s insights are a blueprint for any partner leader navigating AI disruption, agency alliances, or ecosystem growth. Whether you’re an ISV, a SaaS scaleup, or a platform player—there’s wisdom here.

Enjoy the full conversation, and don’t miss Mike’s breakdown of partner impact metrics and why customers with integrations churn 40% less.

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