Jon Miller, the co-founder of Marketo, is back in the category he helped create. This week he officially launched Phave, an AI-native marketing automation platform built to replace legacy systems like Marketo, Pardot, Eloqua and HubSpot — after running in stealth for two years with enterprise customers already on board.

The core idea is a direct shot at how marketing automation works today. Legacy platforms run on rules someone wrote in advance: who belongs in a segment, what a lead is worth, which email goes out next. Miller's argument is that rules are fine for what must be true — consent, frequency caps, quiet hours — but they can't make judgment calls in the ambiguity of a real B2B buying process. Phave replaces the rules with reasoning: its "Maestro" engine computes a per-person "Playlist" of touches most likely to hit the marketer's objective, ordered and timed for each individual, while respecting the team's governance.

Notable details from the launch coverage: Phave reached general availability in August 2026 and is already used by enterprise marketing teams including SambaNova, SPS Commerce, mabl, Servion and Hypha. Reported pricing starts at $36,000 a year — squarely enterprise territory, and a reminder that this is a Marketo/HubSpot replacement play, not a self-serve tool launch.

Whether AI-reasoned journeys beat decades of rules-based automation in practice is the open question — but with a Marketo co-founder at the helm and customers already paying, Phave is the most credible challenger the marketing-automation category has seen in a decade.

Sources