Reply fast without losing your voice
RepliStack drafts clear, on-tone replies from any inbound email so you can stay focused on shipping and selling.
Stop second-guessing every client reply.
Free to start. Account required to track trial usage and subscription. • Privacy-first • Works in every language
Watch a real reply turn into something clear and ready to send.
Start for freeSee the real product turn an incoming email into a ready-to-send reply in seconds.
Small internal test
Stop writing the same client email again and again.
In a small internal test, 5 client emails took 7:37 manually and 1:39 with RepliStack (~70% faster in this sample).
Real-world examples
Common inbound emails and the replies you can send faster.
Pricing question
Incoming: Is there a discount for annual billing?
Reply: Yes — annual billing includes a discount. I can send the exact pricing and help you switch anytime.
Refund request
Incoming: I’d like a refund. The feature I need isn’t there yet.
Reply: Thanks for letting me know. I can process a refund today. If you’re open to it, I can also share our timeline for that feature.
Feature follow-up
Incoming: Any update on the integrations you mentioned?
Reply: Yes — we’re in testing now and expect a rollout next month. I’ll keep you updated as soon as it ships.
Built for solopreneurs who write a lot of emails
RepliStack adapts to your workflow and keeps replies consistent.
Explore other use cases: Freelancers, Support Teams, SaaS Founders, Coaches & Consultants
How it works
Three quick steps to a polished reply.
Paste the incoming email
Drop in the message you need to answer. No templates required.
Generate a reply
Get a clear, on-tone draft in seconds.
Edit and send
Tweak if needed, then send or copy into your inbox.
Simple pricing for everyone
Start with a free trial, then upgrade when RepliStack becomes part of your daily workflow.
Free trial
- Generate AI replies after login
- Free trial — 100 replies total
- All tones and languages
- Train your writing style locally
- Support knowledge base stored in your browser
Perfect to test RepliStack and see if it fits your workflow.
Pro
- Everything in Free
- Unlimited replies
- No usage limits
- Priority improvements based on your feedback
- Early access to new smart features
Best for people who rely on email every day and want consistent, high-quality replies.
Questions about pricing?
Do I need an account to use RepliStack? Yes, the app now uses secure account-based usage tracking.
Does RepliStack store my emails? We do not store your emails on our servers. Email content is sent to OpenAI only to generate the reply.
What data is stored? We store minimal account data, usage counts, and subscription status.
Can I change plans later? Yes, you can upgrade to Pro whenever you need unlimited generations.
Privacy-first by design
We use Supabase for authentication and database hosting, Stripe for billing, OpenAI for reply generation, and Vercel Web Analytics plus Google Analytics for public-site measurement.
- Account required to track trial usage and subscription.
- We store minimal account data, usage counts, and subscription status.
- We do not store your emails on our servers. Email content is sent to OpenAI only to generate the reply.
- Google Analytics only runs if you accept analytics cookies, and you can change that choice later from Cookie settings.
FAQ
Clear answers before you try it.
Will it still sound like me?
Yes. You can train RepliStack with your own emails so the tone stays consistent with your voice.
Do I need to upload customer data?
You can paste only the email you want to answer. We do not store your emails on our servers. Email content is sent to OpenAI only to generate the reply.
Can it help with refund or boundary emails?
Yes. It drafts calm, clear replies that hold boundaries without sounding cold.
What languages does it support?
It replies in the same language as the incoming email, including English, Spanish, French, and more.
When should I upgrade to Pro?
If you reply daily or need unlimited drafts, Pro removes limits and keeps your inbox moving.
Reply fast without losing your voice.
Paste the email, keep your tone, and send a better reply in less time.