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.
Capabilities
Every call gets an answer, day and night, weekends included. No more phones ringing out.
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.
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”.
It recognises your regular customers, picks up their history and personalises every conversation.
Every request is understood, categorised and summarised. You only deal with what really matters.
Summary, key points, actions and caller sentiment, sent by email — full transcript included.
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.
Google Calendar, Microsoft 365, Cal.com, Sellsy and monday.com natively, and all your tools via webhooks.
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.
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.
Calls, minutes, average duration, caller sentiment, agent autonomy: from 7 days to 12 months, compared with the previous period.
CRM, tickets, scheduling: every handled call arrives automatically in your business software, with no re-keying. Find out more →
204 min left · 300-min plan
06 11 22 33 44· Durand & Fils · Sunday 25 October at 14:04 · 1 min 35 s
New
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 →
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.
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.
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”.
Linked to the WhatsApp ending in 44 55. You can ask it anything you ask here, in writing or by voice note.
A deletion, an appointment or a message to support is confirmed with the “Approve” button.
Call with the number: 01 84 21 64 68 (Chloé)
CallOnly 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.
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.
Chloé answers on this number.
Forward your line to your Sayelo number, then register it here so that your agent recognises these calls.
In France only: your number leaves your operator and becomes your agent's number. With your RIO code, obtained by calling 3179.
Time off, public holidays, long weekends. Your business's time: Metropolitan France (Paris).
During a closure: a message, hanging up or a transfer. No appointments are booked.
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.
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.
Booked by your agent or added manually.
The app opens full screen, without a browser bar. No app store, no push notifications: your alerts arrive by email, SMS and WhatsApp.
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.
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”.
“Administrator”
The whole account
“User”
Their “Scope”: the agents assigned to them
And also
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.
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.
“Analyse” scores your instructions out of 100 and gives you tips; “Improve” rewrites them with you. For the greeting, “Suggest phrasings”.
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 Julie”: the switchboard passes to a person. “Take back the switchboard”: your agent takes over again.
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.
Last 30 days, compared with the previous period.
New generation
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.
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.
“Test call”
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.
After the call
Every conversation produces usable information — and the agent makes sure it isn't lost.
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.
06 11 22 33 44· Durand & Fils · Sunday 25 October at 14:04 · 1 min 35 s
204 min left · 300-min plan
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.
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”.
Asked by your callers, with no answer in the current knowledge.
“Do you make gluten-free cakes?”
Asked 3 times · last time 12:39
Directory & memory
Full caller memory included on every plan, from Solo upwards.
The people your agent recognises on the phone.
Quality of execution
You define the exact pronunciation of your company name — and the variants to recognise when callers mangle it. No more mispronounced names.
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.
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.
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
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.
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.
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.
Frequently asked questions
Yes. It understands natural language, handles hesitations and digressions, and rephrases if needed — just like a real conversation.
Completely. You define the tone, standard answers, transfer rules and the information to give. Our teams support you.
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.
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”.
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.
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.
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”.
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.
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.
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.
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.
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.
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.
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 →