Paid Ads Strategy of an Exploding AI Newsletter

Anthony CastrioFounder of Bot Eat Brain $5000+ monthly ad revenue
Published August 28, 2023 by Fardeen KhanReviewed and edited by Niall Doherty

Anthony Castrio tweeted in September last year…

Starting a new daily newsletter.

Going to grow it from 0 to 10,000 subscribers and start to monetize as fast as inhumanly possible.

I’ll be building the whole thing in public right here

Now, almost 11 months later, his daily newsletter about AI called Bot Eat Brain has 24,000+ subscribers

Anthony charges as much as $1999 for a sponsorship package and recently tweeted…

Passed $5k in ad revenue for August so far. Stretch goal is $6k. I think we’ll hit it.

It took 6 months for Anthony to get his first 1000 subscribers

Then he started tinkering with paid ads…

Now I understand why Facebook is a billion-dollar company. After running a profitable ad, my first thought was:

“Now, exactly how fast can I give them all the money that I have?”

Next, he did something unusual

I sold 20% of the Bot Eat Brain newsletter to @DBogachek for $10,000.

A couple of weeks later he wrote…

My AI newsletter @BotEatBrain just passed 5,000 subscribers. We’ve added more than 2,000 new subscribers in the last 10 days.

I reckon a huge part of this was running ads funded by that $10,000 injection.

This seems to be when the newsletter really took off

Anthony’s response when asked about his biggest growth contributor….

Right now paid ads are #1 followed by word of mouth and shoutouts in other newsletters.

He also tweeted recently…

I spent over $10,000 on Facebook Ads last month.

I got back over $7,000 from Sparkloop.

My effective paid CPA for new readers is about $0.25 cents.

I make about $0.40 cents per reader per month.

You do the math.

This is why newsletters are exploding.

The way Sparkloop works: you get a popup after you sign up for Bot Eat Brain suggesting other newsletters to subscribe to; if you go ahead, Anthony gets paid for that referral

Sparkloop recommendations can also be links inside the newsletter. See the “recommended reading” section in a recent Bot Eat Brain newsletter.

Lastly, given how instrumental Facebook ads have been for growing Anthony’s newsletter, you might want to check out his ads here

Looks like he’s been running one primary ad since June, nothing fancy, just simple text.

But I bet Anthony experimented with lots of ads before landing on that one as the most effective

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