Set up a newsletter on any topic, at any cadence, in one email

Every newsletter you read was built for thousands of other people. The editor picks the topics, the writer picks the angle, the publication picks the cadence. You either fit the audience they had in mind or you don't.

A Marvin newsletter inverts that. You pick the topic, the cadence, and the format. The audience is exactly one person. And you set it up in a single email.

One email to start

Describe what you want, when you want it, and how. Whatever you'd tell a junior analyst, paste it in:

To: marvin@ccmarvin.com

Hi Marvin,

Please send me a daily brief at 7 AM Eastern, weekdays, on AI infrastructure startups (training, inference, hardware), major funding rounds in my sectors, and any news on my portfolio companies. Skip retail, consumer hardware, crypto, and gaming. Under 400 words. Cite sources.

The next morning, the first brief arrives. Marvin reads the time zone from your email, so "7 AM" means 7 AM where you are.

Any cadence, any topic

The cadence is yours: daily, weekday mornings, twice a day, weekly, monthly, quarterly, even one-time ("send this once next Tuesday, then stop"). Just say so in the email.

The topic is yours too, and it doesn't have to be investing. We've seen briefs set up for competitive intelligence, regulatory tracking ("FDA approvals in oncology"), a city guide before a trip, and a parent keeping up with their teenager:

To: marvin@ccmarvin.com

Hi Marvin,

My 14-year-old keeps using words I don't recognize. Send me a brief every Sunday evening on what's trending with US teens: TikTok and X memes, new slang and what it means, music breaking out. Keep it short and explain things like I'm not on TikTok.

Same shape as the investor brief. Different topic. Same one-minute setup.

Any format

The default is one-sentence bullets with citations, right for a morning skim. Ask for anything else: a table, themed sections (Funding / Product / Personnel), three sentences per item instead of one, plain text with no headers, a one-paragraph overview up top. If the shape that arrives isn't right, say so in a reply.

Tuning is part of the loop

The first brief is rarely the one you're reading three weeks in. You reply with what to change, and the next one reflects it:

To: marvin@ccmarvin.com

Hi Marvin,

Drop the China-approval section unless it's a US-listed company. And lead with the FDA actions before the trial readouts.

One line. The recurring task updates. No dashboard, no settings page, no re-explaining what you originally asked for. The brief shapes itself around you over time.

What you give up

The editorial voice of a specific writer. If you read a newsletter for the way one person thinks, keep reading that one. Marvin is news, summarized to your spec. You also trade the serendipity of a wide-aperture brief for relevance: a personalized brief only covers what you asked for. For the brief you skim between meetings, that trade is worth it.

How to try it

Describe the brief you'd want in your inbox tomorrow and send it to marvin@ccmarvin.com. The first one arrives the next morning. If you're not reading it after two weeks, reply "cancel this task" and it's gone.