
Letterkit
AI Builds your Marketing Emails, sequences and replies!
4 followers
AI Builds your Marketing Emails, sequences and replies!
4 followers
Most founders struggle to finish marketing email. Letterkit learns your brand from your site, writes emails and the sequence, writes back on replies, and grows your list with a widget or forms. Free to start — no card, unlimited subscribers.





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Hey Product Hunt! 👋 Sammy here.
I got tired of watching founders (and myself) know they needed marketing email — welcoming people, following up, sending a newsletter, answering replies, growing the list — only to stall on a blank campaign or a tool that takes weeks to set up.
Why existing tools fall short:
Big platforms (Klaviyo, Mailchimp): Powerful, but bloated for fast-moving founders.
AI copywriters: Give you static text, then leave you to build the sequence, write the newsletter, handle replies, and set up capture forms yourself.
How Letterkit fixes this:
🧠 Learns your brand from your site — voice, offers, and what you actually sell.
⚡ Writes the emails and the follow-up sequence — welcome and follow-ups that keep running.
📰 Newsletters on a cadence — daily, weekly, or monthly. Ask AI for the issue, or write it. If it isn’t ready, that send is skipped.
💬 Drafts replies when people write back — conversations don’t die in the inbox.
📈 List growth built in — subscribe widget, shareable page, and forms. New people can enter the sequence right away.
Mail goes out from your domain through your email API (Resend, Mailgun, or SendGrid). No per-subscriber tax.
Product Hunt launch deal:
Start free — no credit card. Unlimited subscribers on every plan. when you’re ready.
I’d love your feedback:
If you run a SaaS, brand, or side project, what’s the #1 reason email still isn’t live — writing copy, sequences, the newsletter, replies, or capturing emails on the site?
Give it a spin at https://letterkit.co and tell me what you think. 🚀