⚡ Features

Everything your voice agent can do.

Sayelo is an AI voice agent that answers every call, books the appointment in Google Calendar, Microsoft 365 or Cal.com, transfers urgent calls and summarises the call for you, with up to 10 simultaneous calls. You talk to it in writing or out loud, in the app or on WhatsApp, and you call your customers with its number (in France for now).

It answers for you, as before. And now you talk to it as you would to a colleague: it sets its own opening hours, closures and answers, and gives you an update on your calls. What's changing: what's new. All the facts on one page: Sayelo at a glance.

✓ Natural & multilingual voice✓ New number included✓ Ready in 5 minutes
Sayelo Incoming callDr Roux's practice · Lyon
LIVE
CallerHello, I need an appointment quickly, it's rather urgent.
SayeloI understand. Dr Roux can see you tomorrow at 8:45, would that suit you?
CallerYes, that's fine, thank you.
SayeloIt's booked. Remember to bring your health insurance card. Have a good day!
Appointment booked · tomorrow 8:45Confirmation sent by SMS

Capabilities

A complete assistant, not just an answering machine.

Answers 24/7

Every call gets an answer, day and night, weekends included. No more phones ringing out.

Books appointments

Calendar read in real time, Google Calendar, Microsoft 365 or Cal.com, anti-duplicate lock, confirmation, rescheduling, cancellation — and a reminder SMS the day before to prevent no-shows.

Smart transfer

For an urgent request or a special case, it puts the call through to you at the right moment — otherwise it handles it. Each transfer number can be offered only at certain times: evening or weekend on-call cover, for example. And you choose the number your colleague sees: “Sayelo number” or “Caller's number”.

Persistent memory

It recognises your regular customers, picks up their history and personalises every conversation.

Qualifies & sorts

Every request is understood, categorised and summarised. You only deal with what really matters.

Post-call analysis

Summary, key points, actions and caller sentiment, sent by email — full transcript included.

Sends the right SMS during the call

Booking link, address, website: you prepare up to 5 SMS, and the agent sends the right one to the caller during the conversation — with their consent.

Connected to your tools

Google Calendar, Microsoft 365, Cal.com, Sellsy and monday.com natively, and all your tools via webhooks.

Natural voice

Next-generation speech-to-speech engine: quick-fire replies, interruptions handled, expressive voices to listen to before you choose, and careful pronunciation of your company name.

Multilingual, within the same conversation

The caller switches to English? The agent switches to their language, then back to its usual language with them. Nearly 100 languages, which can be turned on agent by agent.

Call statistics

Calls, minutes, average duration, caller sentiment, agent autonomy: from 7 days to 12 months, compared with the previous period.

Outbound webhooks

CRM, tickets, scheduling: every handled call arrives automatically in your business software, with no re-keying. Find out more →

Activity · TodayReachable
7calls
14minutes
1in progress

204 min left · 300-min plan

AllTo doDoneOutbound
PD
Paul DurandOrder for two tarts, collection on Saturday
Appt booked14:04
SL
Sophie LeroyWants a call back about a tasting
To do10:54
MP
Marc PetitYou called him from Sayelo
Outbound09:30
IM
Inès MoreauSunday opening hours
Enquiry07:44
Activity · Calls
Paul Durand

06 11 22 33 44· Durand & Fils · Sunday 25 October at 14:04 · 1 min 35 s

Appt booked
Call backHide
Summary
The customer would like to order two strawberry tarts for Saturday lunchtime and asks whether the shop is open on Sundays.
To doConfirm by SMS
Satisfied callerorder

New

Your agent becomes a colleague you talk to.

You write to it or talk to it, in the app or on WhatsApp, and it acts. You call your customers with its number. And for your time off, one sentence is enough. Everything that changes with the new version →

Talk to it: it acts, and shows you what it has changed.

The app opens on “Talk”, a chat thread with your agent. You write to it, you dictate (your words appear in the field, and nothing is sent before “Send”), or you start a “Voice conversation” to talk out loud with its voice. It gives you an update on your calls and sets its own opening hours, closures, greeting, transfers and what it knows how to answer.

  • Every change appears in the thread, with “View” and “Undo”
  • Sensitive actions wait for your approval: “Confirm” or “Cancel”
  • A single thread on your computer, phone and WhatsApp

Talk to your agent, in detail →

Talk · ChloéReady to answer you
Voice noteWe're closed from 24 to 26 December, let customers know.
10:34 WhatsApp
Exceptional closure added: from 24 to 26 December
ViewUndo
Noted. From 24 to 26 December, I'll tell callers that the bakery is closed and reopens on the morning of the 27th.
10:35 WhatsApp
Who called this morning?
Five calls this morning:
  • Paul Durand booked a collection on Saturday at 11:30.
  • Sophie Leroy wants a call back about a tasting.
Welcome to Sayelo
Your agent answers your calls. Ready in a few minutes.
Your businessIts name, activity and websiteYour agent and its voiceIts first name, voice and greetingIts numberTo receive your calls
Set up on WhatsAppOn your phone, without giving your number.Set up in writingHere, by answering a few questions.I'd rather fill in the form

Setup led by your agent.

Once your account is created, you choose: “Set up on WhatsApp”, “Set up in writing”, or the form. Your agent asks its questions one at a time, reads your website to write your business profile, and lets you listen to the voices before you choose. Nothing is confirmed without your approval.

  • The name to say on the phone, if it differs from the official name
  • Then “Guided settings”, one topic at a time, starting with “WhatsApp and alerts”
  • Ready in 5 minutes

Manage it from .

Link your WhatsApp by sending a code, without entering your number. Then ask it on WhatsApp whatever you would ask in the app, in writing or by voice note: “What are my latest calls?”, “Close the switchboard on 25 December”.

  • Calls needing action, and appointments booked, moved or cancelled
  • A daily report every morning, on days with calls
  • WhatsApp is for you, the business owner, not for your callers

AI receptionist you can manage on WhatsApp →

Account · Notifications
Manage from WhatsApp

Linked to the WhatsApp ending in 44 55. You can ask it anything you ask here, in writing or by voice note.

Linked
WhatsApp alertsA message when a call needs action (message taken, call-back requested…), with the number to call back.
Daily reportEvery morning, the calls from the last 24 hours, those needing action first.
Message for every callWho, why, the outcome. A call that needs action only triggers one message: the alert.

A deletion, an appointment or a message to support is confirmed with the “Approve” button.

Outbound callsChloé's number
KeypadRecentContacts
06 22 33 44 55

Call with the number: 01 84 21 64 68 (Chloé)

Call

Call your customers with your agent's number.

Only in France for now: from your computer or your phone, you call your customers from Sayelo. They see your agent's number and can call you back on it: your agent answers. During the call, you do the talking, not the AI.

  • French landlines and mobiles, on all paid plans, including Solo
  • Activation approved by our team, which checks the emergency address
  • No recording and no transcription; a “Note” if you wish

Outbound calls, in detail →

Your number, your way.

You keep your current number by forwarding it to your agent's number. Your agent also receives a number according to your country's rules: see Sayelo in your country.

  • In France: number porting from the Solo plan, requested in the app or from your agent, with your RIO code
  • Handled by the Sayelo team, within a few working days
  • Once ported, your customers see your own number when you call them from Sayelo
Account · Numbers
Sayelo number01 84 21 64 68

Chloé answers on this number.

Copy
Keep your current number

Forward your line to your Sayelo number, then register it here so that your agent recognises these calls.

04 72 00 00 00Shop · registered line
Transfer your number to Sayelo (France)

In France only: your number leaves your operator and becomes your agent's number. With your RIO code, obtained by calling 3179.

ReceivedIn progressCompleted
What it does · Opening hours
Exceptional closures

Time off, public holidays, long weekends. Your business's time: Metropolitan France (Paris).

From Thursday 24 to Saturday 26 DecemberChristmas holidays Play a message: “The bakery is closed for the holidays, we reopen on the morning of the 27th.”
Upcoming
Friday 1 January, all dayNew Year's Day Transfer to Julie
Upcoming
Add a closure Whole daysSpecific hours

During a closure: a message, hanging up or a transfer. No appointments are booked.

Time off, public holidays: one sentence is enough.

Say “We're closed from 24 to 26 December”, in the app or on WhatsApp, or add the closure on screen, in “What it does” → “Opening hours”. Your usual opening hours stay as they are.

  • Whole days or specific hours, in your business's time zone
  • During the closure: your message, hanging up, or a transfer
  • No appointments are booked during a closure

Appointments, on a dedicated page.

Your agent books appointments during the call, in Google Calendar, Outlook / Microsoft 365 or Cal.com, as before. New: the “Appointments” page shows upcoming and past ones. You add, move or cancel them on screen, or by messaging your agent, which asks you to confirm.

  • SMS to the customer: confirmation, rescheduling, cancellation and reminder the day before
  • A WhatsApp message for every appointment booked, moved or cancelled, if you turn it on
  • If no appointment reason is set up, no appointment is booked
Activity · Appointments
Appointments

Booked by your agent or added manually.

New
UpcomingPast
Tomorrow
15:3015 min
Paul DurandOrder collection · 06 11 22 33 44Confirmed
MoveCancel appointment
Wednesday 28 October
14:1530 min
Sophie LeroyTasting · 06 22 33 44 55Confirmed
MoveCancel appointment
Install app
On iPhone
Safari Share “Add to Home Screen” “Add”
Also on
iPadAndroidMacPC · Chrome or Edge

The app opens full screen, without a browser bar. No app store, no push notifications: your alerts arrive by email, SMS and WhatsApp.

In your pocket, without an app store.

Nothing to install to get started: everything works in the browser. And “Install app” adds Sayelo to your phone's home screen (iPhone, iPad, Android) or to your computer (Mac, PC with Chrome or Edge). The app then opens full screen.

  • No App Store or Google Play: nothing to download
  • On iPhone: Safari, “Share”, then “Add to Home Screen”
  • Your alerts arrive by email, SMS and WhatsApp

Your team on Sayelo, each with their own agents.

Depending on the plan, 1 to 5 people log in to the same account, each with their own email, and more on Custom, on request. Everything is set in “Account” → “Team”.

  • Two roles: “Administrator”, who manages the whole account, and “User”, who only sees their own agents
  • Each with their own “Scope”: the agents assigned to them, their calls, their instructions, their appointments
  • “Invite a member”: an email, and a link valid for 7 days to join the team
  • The “Activity log”: who did what, when and from where, kept for a year
  • “Agents' WhatsApp messages”: each agent writes to the person in charge of it

Working as a team, in detail →

“Administrator”

The whole account

  • Agents
  • Plan
  • Numbers
  • Company
  • Team
  • Activity log

“User”

Their “Scope”: the agents assigned to them

  • Their calls
  • Their instructions
  • Their opening hours
  • Their appointments
For the whole team: contacts Each person links their own WhatsApp
The activity log keeps track of who did what for a year.

And also

The details of the new version.

🌐

The app in seven languages

French, English, Spanish, Italian, Portuguese, German, Hebrew. This is the interface language: on the phone, your agent speaks your country's language by default, and the caller's language if you turn that on.

📊

Comparative statistics

Over 7 days, 30 days, 3, 6 or 12 months: calls, minutes, average duration, successful calls, caller sentiment and agent autonomy, against the previous period.

📝

Instructions reviewed

“Analyse” scores your instructions out of 100 and gives you tips; “Improve” rewrites them with you. For the greeting, “Suggest phrasings”.

🏷️

The name said on the phone

Your trading name, separate from the company's official name: it is the one your agent says when answering, and the one that signs its SMS.

↪️

Forward everything to someone

“Forward everything to Julie”: the switchboard passes to a person. “Take back the switchboard”: your agent takes over again.

📞

“Test call”, always within reach

At the top of the screen: you call your agent through the microphone to hear it as your customers do. Nothing is recorded or billed.

Activity · Statistics

Last 30 days, compared with the previous period.

7 d30 d3 months6 months12 months
42calls+12% vs previous period
96minutes used+8% vs previous period
2 min 17 saverage duration−4% vs previous period
88 %successful calls+3% vs previous period
Calls per dayThis periodPrevious

New generation

A voice engine that changes the conversation.

The agent listens and speaks live, in one continuous flow — without chaining speech recognition, text and then synthesis. You can hear the difference, and you can try it.

Each caller's language, followed live.

A caller switches to English or Spanish? The agent switches, holds the conversation in their language, and switches back to its usual language as soon as the caller does. Nearly 100 languages included in every plan, turned on with a simple switch, agent by agent.

  • Switches language and back again mid-conversation
  • Optional on each agent — off by default
  • Call summary always in your account's language, whatever language is spoken
SayeloIncoming callHôtel du Parc
🌐 FR ⇄ EN
CallerHi! Do you have a room for two this weekend?
Sayelo · switches to EnglishOf course! A double room is available on Saturday. Shall I book it?
CallerParfait — et je peux régler à l'arrivée ?
Sayelo · back to FrenchTout à fait, c'est réservé pour samedi. À bientôt !
Test call · at the top of the screen

“Test call”

“Boulangerie Martin, hello! I'm Chloé, the shop's AI assistant. How can I help you?”
Nothing is recorded Nothing is billed 5 minutes maximum

Hear your agent before your customers do.

The “Test call” button, at the top of the screen, lets you talk to your agent through the microphone, from your browser. You hear it in real conditions: its voice, its instructions, its background ambience. You no longer have to take our word for it.

  • Nothing is recorded or billed
  • Useful after every change to the greeting or instructions
  • No account needed: a demo agent calls you back

After the call

Hanging up doesn't mean it's over.

Every conversation produces usable information — and the agent makes sure it isn't lost.

Every call, analysed automatically.

As soon as the call ends, you receive much more than a summary by email: the key points, the actions already taken during the call, those still to do, the caller's sentiment — positive, neutral or negative — and the topics discussed.

  • Summary, key points and topics discussed
  • Actions taken during the call, actions still to do
  • SMS notification available (paid plans)
Activity · Calls
Paul Durand

06 11 22 33 44· Durand & Fils · Sunday 25 October at 14:04 · 1 min 35 s

Appt booked
Call backHide
Summary
The customer would like to order two strawberry tarts for Saturday lunchtime and asks whether the shop is open on Sundays.
To doConfirm by SMS
Satisfied callerorder
Activity · TodayReachable
7calls
14minutes
1in progress

204 min left · 300-min plan

AllTo doDoneOutbound
SL
Sophie LeroyCall-back requested: a tasting
To do10:54
LB
Lucas BernardMessage taken: a buffet for twenty people
To do08:12

The “To do” filter: nothing is left without follow-up.

A message taken, a call-back promised, a verbal commitment detected during the conversation: these calls end up in “Activity” → “Calls”, “To do” filter, until someone deals with them. And if you turn it on, your agent flags them to you on WhatsApp.

  • Messages taken and promised call-backs highlighted
  • Verbal commitments detected during the call
  • No request is left without follow-up

It learns from its calls, never without you.

When a caller asks a question the agent couldn't answer, your agent puts it to you in “Talk”. You answer in one sentence, in writing or by voice: it knows the answer from the very next call. Pending questions are also in “What it knows” → “Knowledge”.

  • Texts, questions and answers, pages, files or a whole website: up to 300 sources
  • One question, a one-sentence answer, and it's learnt
  • Human approval required before anything is learnt
What it knows · Knowledge3/300 sources
To learn 1 unanswered question for Chloé

Asked by your callers, with no answer in the current knowledge.

“Do you make gluten-free cakes?”

Asked 3 times · last time 12:39

AnswerIgnore
AllTextsQ&AWebFiles
Add
Web
The bakery's websiteRead in full
Q&A
Do you take orders for weddings?Yes, by appointment in the shop
File
Cake menu.pdf2 pages

Directory & memory

A memory that changes the relationship.

  • It recognises known callers — surname, first name, company, history of recent calls — and personalises the greeting.
  • Notes for the agent, contact by contact (“always transfer Mr Martin”), and your favourite contacts.
  • “What your agent remembers”: what it has retained about each caller, on their record.
  • GDPR right to be forgotten: “Forget this contact”, from their record.
  • Search by name, company or number in your contacts, and by keyword in your calls.

Full caller memory included on every plan, from Solo upwards.

Activity · Contacts

The people your agent recognises on the phone.

All4Favourites1With notes1
PD
Paul DurandDurand & Fils · last call 14:04
Notes
SL
Sophie Leroy06 22 33 44 55 · last call 10:54
MP
Marc PetitCabinet Petit · last call 09:30
What your agent remembers · Paul Durand
Often orders two strawberry tarts for Saturday, collected around midday.
Forget this contact

Quality of execution

The details that make a real conversation.

🗣️

Your name, pronounced properly

You define the exact pronunciation of your company name — and the variants to recognise when callers mangle it. No more mispronounced names.

⚡

Human-level responsiveness

Instant greeting thanks to the pre-generated message, optimised response times, smart waiting: the agent detects whether the caller has finished their sentence or is hesitating, and adjusts how long it stays silent. And a caller who spends two minutes explaining their problem is never cut off.

🎙️

Professional-grade transcription

A dedicated recognition engine transcribes every call alongside the conversation, automatically fed with your business's vocabulary. Validated on difficult cases: spelt-out names, numbers, codes, amounts, homophones. Faithful to the spoken language. If the caller's line was poor, the call record says so, to explain a degraded transcript.

🌴

On French overseas time

Réunion, the French Antilles, French Guiana, Mayotte, the Pacific: your agent runs on your time (opening hours, closures, transfers, appointments, “it's 2 pm”), and overseas numbers are recognised for transfers and SMS.

And as always

Included, with no hidden extras.

📞

Your own number or a new one

You keep your current number by forwarding it to your agent's number. Your agent also receives a number according to your country's rules: see Sayelo in your country.

🎚️

GDPR built into the product

Recordings opt-in, deletion in one click. Recordings and transcripts are kept for a limited period, configurable by the customer (90 days by default), then deleted automatically. Nothing is resold. Data hosted in France by an HDS-certified host.

🤝

Support from A to Z

Our teams set up and fine-tune the agent with you. A question? “Account” → “Help”: ask it, or write to support and track your requests.

Data hosting

Data hosted in France by an HDS-certified host

Our security guarantees →

Frequently asked questions

What we're asked most.

Does Sayelo really understand my callers?

Yes. It understands natural language, handles hesitations and digressions, and rephrases if needed — just like a real conversation.

Can I customise what it says?

Completely. You define the tone, standard answers, transfer rules and the information to give. Our teams support you.

Does the agent send SMS?

Yes: appointment confirmation and cancellation, a reminder the day before to prevent no-shows — on by default — and call notifications for you. And during the call, it can send the caller the SMS you have prepared (up to 5: booking link, address, website…). It never writes the text itself.

What happens if it doesn't know the answer?

It follows your instructions: take a qualified message, or transfer to the right person. Then it puts the question to you in “Talk”: you answer once, in one sentence, and it knows the answer from the very next call. Pending questions also appear in “What it knows” → “Knowledge”.

Can an AI voice agent answer in English or other languages?

Yes, on every plan, agent by agent: if the caller switches to English or Spanish, the agent switches to their language, holds the conversation, then switches back to its usual language with them. Nearly 100 languages are covered. Your call summary always arrives in your account's language.

Can an AI voice agent take several calls at the same time?

Yes. At Sayelo, 1, 2, 5 or 10 simultaneous calls depending on the plan: one on Solo, two on Essentiel, five on Pro, ten on Business. No more engaged tone when three customers call in the same minute: each one talks to the agent. The details by plan are on the pricing page.

Can I limit a transfer number to certain hours?

Yes. Each transfer number has an “Availability” setting: “Always available”, or “On a schedule”, with days and time slots, in your business's time zone. Outside its hours, the agent never offers that number. During its hours, a time-limited number takes priority over an always-available number for the same reason: the typical case of evening or weekend on-call cover. One transfer number from Solo, several from Pro; to landlines and mobiles in the 9 countries where Sayelo is open. When you set up a transfer with it, your agent suggests these hours, its conditions, for example “if they insist on speaking to someone” or “for an emergency”, and the number the person receiving the call will see: “Sayelo number”, by default, or “Caller's number”.

Can I give my colleagues access to Sayelo?

Yes, in the new version of the app: “Account” → “Team” → “Invite a member”. You enter their email, choose their role, “Administrator” or “User”, and for a user, the agents in their scope. They receive an email with a link valid for 7 days. The number of people depends on the plan: 1 on Solo, 2 on Essentiel, 3 on Pro, 5 on Business, and on Custom, 5 users, more on request. An email address can only belong to one Sayelo business.

How do I get help once the agent is up and running?

In the app, “Account” → “Help”: ask your question, or write to support and track your requests in the same place. Guided tours show you each screen, and “Replay the guide” restarts them at any time. You can also ask your agent, in “Talk”, to pass a message on to support: it waits for your approval before sending it.

Does Sayelo work in the French overseas territories?

Yes. Réunion, the French Antilles, French Guiana, Mayotte, the Pacific: your agent runs on your time, for its opening hours, its exceptional closures, the hours of your transfer numbers, appointments and the time it gives during the call. Overseas numbers are recognised for transfers and SMS. The time zone is chosen in “Account” → “Business”, and an overseas postcode selects it automatically.

Can I hear my agent before subscribing?

Yes, in two ways. Have a demo agent call you back on your phone, in one minute. Or create your agent during the 14-day free trial, then tap “Test call” at the top of the screen: you talk to it through the microphone, from your browser, and nothing is recorded or billed.

Does my agent book appointments as soon as a calendar is connected?

Not on its own: it needs at least one appointment reason. The reason, duration, notice period, information to ask for and SMS are set in “What it does” → “Connected calendar”. If no reason is set up, it books no appointments.

Which languages is the Sayelo interface available in?

In seven languages: French, English, Spanish, Italian, Portuguese, German and Hebrew. On the phone, it's a separate setting: your agent speaks your country's language by default, and answers in the caller's language if you turn on the “Multilingual agent” option.

All this,
up and running in 5 minutes.

Create your account, let your agent guide you, then listen to it with “Test call”. 14-day free trial, and we help you set it up.

Try free for 14 days →