Step into any CMO’s office this quarter and you’ll likely see a pile of vendor decks promising 12-month payback, with vendors sounding very sure about year one and noticeably less certain about year three. This is often where a promising pilot quietly turns into technical and operational debt. The agentic commerce pitches begin to sound the same: one claims to reinvent the funnel, another to unify the stack, and a third to replace tools the CMO only bought last year. The acronyms are all there (UCP, MCP, A2A, etc.), and the demos look fantastic. Yet, as with any emerging category, major unknowns remain: acquisitions, shifting standards, and pricing overhauls that can derail a three-year roadmap. To judge these bets, it’s useful to compare them to a channel that has already weathered decades of tech disruption: direct mail. Unfashionable as it sounds, direct mail will likely outlive most of the agentic commerce startups pitching you right now. That’s a counterintuitive claim in a year when AI agents shaped 20% of all Cyber Week orders in 2025 and generated an estimated $67 billion in global sales, according to Salesforce. The capability is real, and so is the capital flowing into it. Direct mail, on the other hand, was declared dead with the rise of email, then again with banner ads, programmatic, social, and retail media. Yet it still has a line in the budget, having survived four complete rebuilds of the ecosystem around it. Despite the breathless headlines, direct mail persists because brands actually own the core assets that make it effective. That’s a powerful lens for…