I'm building something similar (Dead Simple Email - same category, different pricing structure). The moat criticism is fair and worth being honest about. The defensible part isn't the feature set, it's infrastructure and price. We run our own mail servers rather than reselling SES, which gives us direct control over deliverability and costs. That's what lets us charge $29/mo for 100 inboxes where AgentMail is at $200. Whether that's a real moat or just a head start is a legitimate question. Email deliverability is genuinely hard to get right at scale, but I can't say with confidence they won't eventually just absorb this. Building fast and staying cheap is the only real answer I have to that.

“Each agent gets its own identity from a single domain.“ That too on the edge, along with the futuristic CF Dev primitives.

I had the same thought when I read this part. The $6MM investment on Agent Mail is in serious trouble right now.

> new startups having moats thinner than Durex are thinking

Haha, great visual. Really illustrative of what these AI startups and bootstrapped indie developers are dealing with (and, if I had to guess, why most of them don't go anywhere).

> We raised $6M in Seed Funding

Well that part was impressive. It looks like they focused on receiving emails, that is probably even worse, as I expect OpenAI/Anthropic to add such ability directly to agents, if it really is useful.

Classic "is this a feature or a product?" problem. You're going to have a bad time if you spend all your effort on a feature and nothing to set it apart.

Write an angry blog post about how big business is using their power to kill their _totally_ unique original idea that nobody could possibly copy in a hour?

The plan is to have exited by then. These people are mostly just grifters.