Free tools for people who send.

Koldemails is a free toolkit for anyone doing cold email or outbound GTM — founders, SDRs, agencies, and freelancers who'd rather ship pipeline than fight their inbox provider.

We started it for a simple reason: almost every cold email tool on the market makes you sign up, gates the useful parts behind a credit limit, and uploads your lead list to their servers. We thought the basics should just be free — and private.

What we believe

Free should mean free.No signup, no credit card, no "3 uses then a paywall." Every tool here is unlimited.

Your data is yours.Our tools run in your browser. When you paste a lead list into the email verifier or a draft into the spam checker, it isn't uploaded to a server — it's processed on your device. We couldn't keep your list if we wanted to.

Honesty over hype.We tell you what a tool can and can't do — no "99% accuracy" theater. Deliverability is hard; we'd rather give you a real number than a comforting one.

What's inside

A growing set of free tools — a cold email cost & ROI calculator, a spam word checker with one-click fixes, a spintax generator, a bulk email verifier, a domain name generator, a domain age & health checker, a competitor infrastructure spy, and a cold email generator.

Plus free lead lists by vertical and playbooks on deliverability, infrastructure, and copy that actually gets replies.

Who's behind it

Koldemails is built and maintained by operators who run cold outbound themselves — not a company selling inboxes. If a tool or list would help you, we'd rather you just use it.