
WarmOpener
AI cold email that reads the website to write like a human.
15 followers
AI cold email that reads the website to write like a human.
15 followers
Stop manually visiting 100s of websites just to launch one campaign. WarmOpener automatically visits prospect sites to understand their business. Don't stop at intros. Generate unlimited custom AI fields to personalize any part of your template. Bring your own OpenAI Key for low cost generation and connect Unlimited Inboxes on any plan. No per seat fees or credit markups. Just smart, flexible, and scalable outreach.










Hi Product Hunt! 👋 Maker of WarmOpener here.
I’m super excited to introduce WarmOpener, a cold email outreach platform I built after trying other tools and hitting a wall with their limited personalization.
The process used to be exhausting: I had a list of leads, but to make the emails actually good, I had to manually visit every single website, read what they do, and type a custom line into my Excel sheet. It was tedious and impossible to scale.
So I built WarmOpener around one simple idea: You should be able to send hyper-personalized emails without wasting hours acting as a manual researcher.
What makes WarmOpener different:
Bring Your Own OpenAI Key: No markup on AI costs. Pay pennies for unlimited generation.
Website-Based Enrichment: The system visits your prospect's website to understand their core business offering and value prop automatically.
Unlimited Connected Inboxes + Unibox: We don't charge per "seat." Connect as many sending accounts as you need and manage every reply from one single Master Inbox.
Smart Sequences & Granular Controls: Automate follow-ups that pause on reply. You get full control: set custom sending windows & days, enforce daily volume limits, and assign multiple sender accounts to a single campaign to auto-rotate volume.
🎁 Product Hunt offer: You can create a free account to see the website scraping in action. Plus, use code PH20 to get 20% off your first 3 months.
💡 Bonus: I also built 3 free tools (no signup): Spam Checker, ROI Calculator, DMARC/SPF Generator → warmopener.com/free-tools
If you’ve ever felt the pain of manually clicking through hundreds of websites just to write one good email, I’d love to hear your experience below. 👇
I’ll be here all day answering questions and taking feedback!
P.S. For content creators & agencies: We also just launched our Partner Program (30% recurring lifetime commissions). If you have an audience that needs this, check the link in our footer.
Cloudthread
Love the simplicity and the bring your own API key - what sources can you use for contacts + URLS?
@daniele_packard Thanks for the kind words! You can bring leads from any source. Most people use things like Apollo, Clay or their own lists. As long as you have the company website URL, WarmOpener works the same.