**Subject Line:** *Dunkin’s Free Coffee Play: May 19 Traffic Grab or Market Share Blunder?*

Subject Line: Dunkin’s Free Coffee Play: May 19 Traffic Grab or Market Share Blunder?

The Snippet:

On May 19, Dunkin’ will weaponize its highest-margin SKU—coffee—as a zero-dollar loss leader. For a single 24-hour window, any customer walking through the door gets a free medium hot or iced coffee. No purchase required. No app download necessary.

CEO Take:

This is a binary bet: either a one-day spike in foot LTV (lifetime value) acquisition, or a cannibalization of the paying base. Dunkin’ is betting on inertia—that the “free” trigger draws new lapsed users into the drive-thru queue, where the average transaction includes a donut or breakfast sandwich. If the model holds, it’s cheap CAC. If it doesn’t, it’s a margin hit with no retention gain.

The real question for peers: will this force a “free coffee day” arms race, or was this a one-off calendar play? Watch the Q2 same-store sales print.