Stop rewriting the same emails again and again.
RepliStack helps you reply faster, rewrite less, and keep your tone and knowledge in every draft.
Write better replies in seconds — without overthinking.
Free to start. Used by freelancers, founders, and support teams. Works with any email provider. Use the Chrome extension to reply directly inside Gmail while the app and extension stay in sync.
From incoming email to ready-to-send reply in seconds.
See how RepliStack turns any email into a ready-to-send reply.
See RepliStack in actionProblem
Email replies are repetitive, slow, and easy to get wrong when you are busy.
The real cost is not typing. It is rethinking the same answer, re-checking the tone, and losing focus every time another email lands in your inbox.
The same questions keep coming back
Pricing, delivery, next steps, billing, scheduling, follow-ups. Rewriting the same answer over and over drains time.
Tone changes when you're busy
Fast replies can sound rushed, vague, or inconsistent across your inbox, your team, or your client work.
Every reply steals focus
A two-minute response becomes ten minutes when you need to sound clear, accurate, and ready to send.
Why RepliStack exists
Built from the frustration of answering the same emails all day.
RepliStack started from a very practical problem. As a freelancer, I sometimes had to answer more than 200 emails in a single day, and most of them were variations of the same questions.
One person asked for the price of a service. Another asked for the full list of services. Someone else wanted to know if a specific service was available and how much it cost. The answers were similar every time, but writing them again and again consumed hours.
RepliStack was built to turn those repetitive replies into reusable knowledge while keeping full control over what the AI can access.
Solution
A simple reply workflow you can understand at a glance.
RepliStack focuses on the shortest useful path from inbound email to a reply you are comfortable sending.
Paste the incoming email
Drop in the message you need to answer without exposing your inbox to a complicated setup.
Set the reply direction
Add a short instruction, choose a tone, and pick the reply length that fits the moment.
Generate a ready-to-send reply
RepliStack returns a polished draft you can copy, tweak, or send in seconds.
Real-world examples
Common incoming emails, answered faster.
RepliStack is built for everyday situations: pricing questions, support requests, follow-ups, scheduling, and more.
Pricing question
Customer support
Sales follow-up
Recruiting
Client communication
Scheduling
See more examples
Project update
Client inquiry
Follow-up reminder
Built for people who answer repetitive emails every day
Find the workflow closest to your role, then see how RepliStack fits it.
See who this is for: Solopreneurs, Freelancers, Support Teams, SaaS Founders, Coaches & Consultants
How it works
Three quick steps from inbox friction to a polished reply.
Keep the workflow simple: start in the web app, shape the reply, then use the same logic in Gmail when you want more speed.
Paste the incoming email
RepliStack analyzes the message instantly so you can move from inbox pressure to a clean draft fast.
Choose tone and reply length
Keep the response friendly, professional, concise, or more detailed based on the situation.
Generate and send
Use the draft as-is or make a quick edit before copying it back into your inbox.
Chrome extension
Use RepliStack in your browser or directly inside Gmail.
The web app works with any email provider. For Gmail users, the Chrome extension lets you generate replies without leaving your inbox.
Use the extension when you want to capture the current Gmail message, reuse your synced style profile and knowledge base, and keep your answer flow close to the inbox. It supports the current Gmail MVP workflow while the core reply-generation experience stays centered in the main app.
- Use the web app with any email provider when you want a simple paste-and-reply workflow.
- Open the Chrome extension from Gmail to capture the message while reusing your synced style profile and knowledge base.
- Stay signed in across the web app and extension without changing how your normal RepliStack account works.
Features
Features that keep replies fast and consistent
Built to keep the core workflow quick while giving you enough control to trust the draft before you send it.
Privacy-first
Privacy-first by design
You decide which emails the AI can see.
We do not store your emails on our servers. Email content is sent to OpenAI only to generate the reply.
We store minimal account data, usage counts, and subscription status.
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.
Google Analytics only runs if you accept analytics cookies, and you can change that choice later from Cookie settings.
Pricing
Simple pricing for professionals who handle daily email workflows
The plans stay simple so the product can stay useful: try the core workflow first, then move to Pro when the reply volume is there.
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.
FAQ
The essentials before you try it.
What does RepliStack do?
It turns an incoming email into a polished, ready-to-send reply. You paste the message, choose tone and reply length, and generate the response in seconds.
Who is RepliStack for?
It is built for people and teams who answer a lot of email: support, founders, freelancers, operators, recruiters, and anyone dealing with repetitive inbound messages.
Do I need to connect my inbox?
No. You can paste emails directly into the app. The Chrome extension is optional and helps speed up the Gmail workflow.
Does RepliStack store my email threads?
No. RepliStack stores minimal account, usage, and subscription data, but it does not store inbox email threads on our servers.
Stop second-guessing your emails.
RepliStack turns repetitive emails into clearer drafts with your tone and knowledge.