SaaStr Replaced a $4,000-a-Year Email Marketing Tool With an App Built on Replit
SaaStr's Jason Lemkin says he replaced a $4,000-a-year email marketing tool with one he built on Replit in under 1 hour, and that the new tool saves hours a week.
Who this is about: SaaS media and events company (SaaStr)
What it takes
- Cost
- Cost not statedThe post gives the old tool's price but not what Replit costs.
- Setup time
- An afternoonOur estimate from the source, for one business.
- Skill needed
- Some tech skillsComfortable installing an app, pasting an API key or running a command.
Explain it simply
A media and events company was paying yearly for an email marketing app that felt out of date. Its founder described what he needed to an AI app builder and had a working replacement in less than an hour. He says it does more than the old tool and saves the team time each week.
What was done
He rebuilt the company's email marketing tool on Replit because the old one had no AI or integrations.
In a separate example, SaaStr built a parking-pass distribution app for 5,000 passes at its annual event inside its AI marketing agent, which he says saved weeks of work.
How it went
He says the new tool is "10x better" than the $4,000-a-year one it replaced and saves hours a week. No other figures were shared.
- A short opinion post; it doesn't describe the build steps, features or upkeep.
- He notes that complex software is a different story: Salesforce has become more central to SaaStr's AI agents, not less.
Prompt
Build a simple email marketing app for [company].
It needs to: import contacts from [CSV / CRM], let me write and schedule a campaign, send through [email sending service], track opens and clicks, and handle unsubscribes automatically.
Start with the smallest version that sends one campaign to a test list. Ask me before adding anything else.
List what I need to set up myself (sending domain, API keys) and keep keys out of the code.Setup notes
- List exactly which features of the paid tool you actually use before rebuilding it.
- Test sending, unsubscribes and deliverability on a small list before switching over.
Business fit
Who this helps, and how:
Related
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- AI for email campaigns and adsDepartment hub: AI for marketing, 26 examples
Similar tools
Other tools for this job, and how they differ. Chosen by our editors, never paid for.
- Claude Code
Builds internal tools from a description; a gym used it to replace a $3,600-a-year SaaS with its own app.
See it in use: A 112-Member Gym Swapped a $3,600 SaaS for Its Own App With an AI Coach
- Cursor
AI code editor for shipping a web product or prototype fast; best for founders who can read code.
- Codex
OpenAI's coding agent, used here to build small internal tools from a description.
“Light evidence” (grade D) means: A brief, early or in-progress claim. Treat it as an idea to test, not proof. How we grade. Spotted a mistake? Suggest a correction.