B3: The test user ask

Subject: 30 minutes on [date]: react to something unfinished?

Hi [name],

On [date] I am running a build day where four teams create working prototypes for [one plain line: "choosing an outfit in a hurry" / "chasing an overdue invoice"], all in one day. At 15:30 we put the prototypes in front of a handful of real people, and I immediately thought of you.

What it looks like: you come to [place] for 30 minutes, 15:30 to 16:00, try two or three rough prototypes, and think out loud while you do. You cannot break anything and you cannot be wrong; the builds are being tested, not you. Blunt beats polite, and the teams genuinely want the blunt version.

As a thank you: [voucher / lunch on us / first look at what ships].

Are you in? A yes by [date minus 3] lets me book your slot.

[Your name]