Blog
Notes on building and selling software you buy once and run yourself.
Per-contact pricing: what you're actually paying for
Most email platforms bill on the size of your list rather than what you send. Here is what that costs at real list sizes, why unsubscribed contacts often still count, and when the model is and isn't defensible.
What it actually costs to send 500,000 emails from your own AWS
A line-by-line breakdown of the AWS bill for running a serverless email platform — SES, Lambda, SQS, SNS and EventBridge — at 50k, 500k and 2M emails a month, including the one line that is not free when idle.
Why we sell a one-time license
Every incentive in software points at subscriptions. Here is the reasoning behind charging once instead, what it costs us, and the specific commitments that make a perpetual license mean something.
Stop paying for the same contacts
every month.
$497 once. Runs on your infrastructure, sends through your own AWS SES account. Launch buyers get agency rights permanently — unlimited client workspaces. First 100 licenses.