Self-hosted cold email: own your data, skip the subscription

Most cold-email tools are SaaS: you rent them monthly, your leads live in their database, and their AI costs are baked into your bill. Self-hosted cold email flips all three.

What "self-hosted" actually means

Self-hosted means the software runs on your machine or your own cheap server, not the vendor's cloud. With Doorstep, that's a single Docker container. Your leads, drafts, and settings live in a SQLite file inside a volume you control. There's no vendor account holding your data hostage, and the app keeps working offline — forever — even if the company behind it disappears.

Why it's cheaper than Smartlead or Instantly

Tools like Smartlead and Instantly charge roughly $37–$97 per month. Over a year that's $450–$1,200 — every year, forever. Doorstep is a one-time $299 with 12 months of updates included. The app is perpetual: it runs even if you never pay again.

The other hidden cost in SaaS cold-email tools is AI. When a tool writes emails for you, someone pays the language-model bill — and that's priced into your subscription. Doorstep runs on your own Claude Pro/Max subscription (the one you may already have), so there's no per-email AI markup at all.

The trade-off (be honest with yourself)

Self-hosted means you run one Docker command and manage your own sending inbox. Doorstep smooths this a lot — a one-line installer that opens a setup wizard — but it's aimed at semi-technical operators, agencies, and founders, not people who've never opened a terminal. If that's you, the payoff is real: no lock-in, no subscription, and complete control of your data.

How Doorstep works, briefly

It finds local-business leads from OpenStreetMap, lets your Claude draft a personalized cold email for each one, and you approve every send. Sending goes through your own SMTP with warm-up and bounce protection built in. See finding leads and the deliverability guide.