An AI operating system for WhatsApp & email

Define how each type of
message gets answered.
AI does the rest.

Reply Flow runs a team of AI agents on your inbox. They route each message to the right AI Specialist Agent, reply from your apps and knowledge base, then update your CRM and remember what matters — all the way you'd do it yourself. Under a second. On WhatsApp and email.

7-day free trial · Cancel anytime
Inbox
All Assigned Snoozed
SM
Sarah M. 2m
AI:

"It shipped Monday — USPS, expected Friday..."

DL
M
Daniel L. 18m

"Need a quote for 80 units..."

→ Mira · sales
RT
Rina T. 34m
AI:

"We close at 6pm on Sundays..."

JK
James K. 1h

"I'd like to return the jacket I ordered..."

Drafting reply...
Message comes in

WhatsApp or email

Intake Agent routes it

Reads the message and sends it to the right Supervisor Agent

Supervisor Agent picks a specialist

Matches the specific request to one of its Specialist Agents

Specialist Agent answers

Using its goal, instructions, guardrails, knowledge base, and connected apps

Or hands off to your team

Loops in the right person the moment a human should take over

How it works

One system.
Every message
handled.

Every message moves through a team of AI agents. The Intake Agent reads it first and routes it to the right Supervisor Agent — Sales, Support, Residents, whatever you've set up. That Supervisor Agent then picks the exact Specialist Agent for the specific request.

A pricing question goes to a different Specialist than an inventory question — even inside the same Category. That layered routing is why every answer is accurate, not generic.

Mira — Sales Agent
AI agent · active
3 scenarios
General
Defaults
Scenarios
Fallback
Order status check
Customer asks about shipping or tracking
Instructions Rules KB attached
Bulk pricing inquiry
Asks about 25+ units or volume discounts
Instructions Rules Escalation ⚠️
Return request
Customer wants to return or exchange an item
No Auto-Reply 🔴

Each Specialist Agent is a
complete set of instructions.

Its goal, how it should respond, what it must never do, and when to pass to a person — plus which apps and docs it can use. You write every line.

The Sales Supervisor Agent above holds three Specialist Agents, each handling one kind of request.

See how Specialist Agents work →
What feeds each reply

Four things make every answer right.

Specialist Agents

Each Specialist Agent is your step-by-step instructions for one kind of request. You write the rules; it follows them.

"When someone asks about hours, check the schedule and reply with today's status." — that's a Specialist Agent. You write it once; it runs forever.

Order status 3 rules
Refund request escalate
Hours & location auto
Learn more →

Connected Apps & Custom Tools

One-click integrations with Shopify, WooCommerce, Airtable, Google Sheets, and more. For any other app, create a custom tool in minutes — no developer needed.

AI checks your Shopify inventory and replies with stock status. Or creates an order, updates your CRM, logs a task in your project manager — all mid-conversation.

S Shopify
W WooCommerce
+ Add custom tool...
Learn more →

Knowledge Base

Upload your help guides, policies, menus, price lists — anything your team references. The AI understands context, not just keywords, so it finds the right paragraph every time.

Someone asks about your return policy. The AI pulls the exact clause from your policy doc — not a generic summary, the precise answer for their situation.

Return policy
Product catalog
Shipping rates indexing...
Learn more →

Memory Agent

After every conversation, the Memory Agent extracts important details — preferences, requirements, past issues — and saves them to the contact's profile automatically.

A returning customer messages you. The AI already knows their last order, that they prefer USPS, and that they buy in bulk. No one had to tag or log anything — it learned on its own.

Prefers USPS · shipping
Bulk buyer (50+ units) · purchase
VAT invoice required · billing
Learn more →

One prompt for everything

A dedicated Specialist Agent for every situation, each with its own instructions, rules, and apps

Answers from general knowledge

Answers from your knowledge base, your apps, and your customer's history

Hands off to "a human"

Routes to the right person, nudges if they're slow, keeps the customer informed

No memory between conversations

Learns from every conversation and remembers each customer

Can't take actions

Creates orders, updates your CRM, logs tasks — mid-conversation

What makes this different

This is not
a chatbot.

Most AI tools give you one prompt and hope for the best. Reply Flow gives you a complete system where every part works together — and you control all of it.

TYPICAL CHATBOT

Support Bot
Hi, did my order ship yet? Order #4821
I'm sorry, I don't have access to order information. Let me transfer you to a human agent. Please wait...
Transferred to queue · avg wait 11 min

REPLY FLOW

Mira · Sales Agent
Hi, did my order ship yet? Order #4821
Checked Shopify · Order #4821
Hi Sarah! Yes, your order shipped Monday via USPS. Expected delivery is Friday. Tracking: 9400 1110 2070 4837. Is there anything else I can help with?
Replied in 4 seconds
M
Mira · AI Agent
Active
Damaged item · Sarah K.
Hi, I received my order but one of the items is damaged. The ceramic vase arrived cracked.
M
Mira
I'm sorry to hear that, Sarah. Let me pull up your order.
Checked Shopify · Order #3847 · Delivered May 24
M
I can see your order was delivered on May 24th. For damaged items, I need to hand this to our returns team who can arrange a replacement.
Handed off to Returns Team Full conversation attached
15 min — Specialist notified
32 min — Lisa responded
Customer updated automatically
Human takeover

AI handles it —
until you need to.

You decide, situation by situation, when the AI should step aside. When it does, your team picks up right where it left off.

After the conversation

The reply is just the start.

When a conversation ends, more agents go to work in the background — so your records stay current and your follow-ups happen, without anyone touching a thing.

Memory Agent

Extracts what mattered from the conversation — preferences, requirements, past issues — and saves it to the contact, so the next message starts smarter.

CRM Agent

Keeps your CRM current on its own: creates, merges and de-duplicates contacts; applies tags and labels; updates custom fields, statuses, lead scores and pipeline stages; and assigns each conversation to the right teammate.

Coming soon

Task Manager Agent

Will create tasks, reminders and follow-ups automatically — so nothing a conversation promised quietly falls through the cracks.

We trained an agent on our help docs and pointed it at our Shopify. First-reply time went from 11 minutes to 38 seconds — and we stopped hiring at five.

Priya Ravi
Head of Customer Operations · Halcyon
−96%
reply time
3.2x
throughput
Questions, reasonably

The things you'd
ask on a sales call.

Couldn't find yours? Email [email protected] — a real person replies in under an hour during business hours.

How fast can we actually go live?

About an hour for most teams. Connecting your Gmail and WhatsApp takes five minutes. The rest is writing your first scenarios — the situations your customers actually run into, and how you'd want them handled. We're happy to walk you through it; no onboarding call required.

Will the AI go off-script and embarrass us?

No. The AI only replies when a message matches a scenario you've written. You set the rules; it works inside them. For anything you didn't plan for — refunds, VIPs, anything ambiguous — it stays silent and your team handles it.

Will my WhatsApp number get suspended?

No. Reply Flow runs on official, fully-compliant WhatsApp infrastructure. Opt-in flows, message templates, and the 24-hour reply window are managed for you — so the things that get accounts banned (cold-blasting strangers, sending after the window without an approved template) can't happen by accident.

Will my emails go to spam?

No. Reply Flow sends from your own Gmail or Google Workspace account — deliverability is exactly the same as when you write the email yourself. Your domain, your reputation, your inbox placement. Nothing relays through our servers.

How does my team handle the conversations the AI doesn't?

The conversation goes to the right person — by topic, by workload, or to a specific teammate. If they don't reply in time, the system nudges them, escalates if needed, and keeps the customer informed. Everyone sees who's handling what.

Where is our customer data, and is it safe?

Your conversations, contacts, and docs live in your private Reply Flow workspace — encrypted, isolated from every other company's, and never used to train any model. SOC 2 Type II is in progress; available now under NDA.

Can the AI take actions, or just answer questions?

Both. It can look up an order in your store, check stock in your spreadsheet, or validate a coupon — then reply with what it found. You connect the apps you use and choose which scenarios are allowed to use them.

Can I cancel anytime, or am I locked in?

Cancel anytime. No annual contracts, no early-termination fees. If you stop, your data is yours — we'll help you export it.

What languages can the AI reply in?

Whichever language the customer wrote in. The AI reads the message, matches it to a scenario, and replies in the same language — without you toggling anything.

Can my team review AI replies before they go out?

Yes. The AI can prepare a reply and queue it for a teammate to approve with one click — useful while you're getting comfortable, or for sensitive conversations where you want a human eye first.

Your customers are
waiting. Let's get
them answers.

7-day free trial. You can be up and running within the hour.

Start free trial Or talk to a human → 7-day free trial · Cancel anytime