---
title: "Microsoft 365: mailboxes, Outlook and sign-in | attendo"
description: "Microsoft 365 mailboxes turned into documents, replies from the shared mailbox, Outlook appointments and Entra ID sign-in, with your company’s permissions."
url: "https://attendo.me/en/integrations/microsoft-365"
lang: "en"
---

# attendo + Microsoft 365

The support mailbox stops being just a mailbox: each email is a document with its customer and attachments, and the reply goes out from support@. Plus Outlook appointments and sign-in with your Microsoft account.

Status

- Personal and shared mailboxes
- Inbound email within seconds
- Sign-in with Entra ID

attendo Microsoft 365

- from Microsoft 365 to attendo **Email from your mailboxes** Each email creates or continues a document
- from attendo to Microsoft 365 **Replies from the right mailbox** support@ replies as support@
- from attendo to Microsoft 365 **Outlook appointments** With the Teams meeting if it is online

## Five conversations about the same ticket

The support, maintenance or accounts mailbox is where customer requests arrive, and also where they get lost. Nobody knows who replied, answers go out from each person’s own email, and the thread splits.

With Microsoft 365 connected, every incoming email creates or updates a document in attendo, with its customer identified. Replies go out from the document, with the shared mailbox address, and stay on the timeline with their delivery status.

## What it does, piece by piece

Email, appointments and your team’s sign-in, each with the connection it needs.

### Personal and shared mailboxes

Through Microsoft Graph or through IMAP and SMTP with OAuth, from one organization or several. For each mailbox you choose which folder is read.

### Replies from the right mailbox

A reply from a shared mailbox goes out as that mailbox. You know whether each email was sent, bounced or failed.

### Inbound email within seconds

Microsoft notifies attendo when an email arrives and the document is created within seconds. The periodic check keeps running underneath, in case a notification is lost.

### Outlook appointments

When you propose an appointment, attendo checks the real availability of people and rooms and creates the event, with the Teams meeting if it is online.

### Sign in with Microsoft

Your team signs in with their Microsoft Entra ID account, in the mobile app too, and attendo still asks for their two-factor code if they have it turned on.

### Copilot as marIA’s engine

Your organization’s Microsoft 365 Copilot works for marIA, with processing kept inside your Microsoft organization.

Your scheduled documents also show up in Outlook through the calendar subscription, read-only and without connecting anything.

## What travels, and in which direction

Without instant inbound email, attendo checks each mailbox every 5 minutes, or as often as you choose.

What travels between attendo and Microsoft 365, in which direction and when

| Data | Direction | When |
| --- | --- | --- |
| Incoming emails, with their attachments | from Microsoft 365 to attendo | Within seconds with instant inbound email |
| Replies and emails from attendo | from attendo to Microsoft 365 | On send, or in the background with retries |
| Read, deleted and junk | from attendo to Microsoft 365 | When you do it in attendo |
| Availability of people and rooms | from Microsoft 365 to attendo | When the slots for an appointment are calculated |
| Appointment event | from attendo to Microsoft 365 | When it is confirmed, changed or canceled |
| Identity: the email address | from Microsoft 365 to attendo | At each sign-in |

## How to get started

Email and sign-in are set up in Settings with your organization’s credentials. Instant inbound email and Outlook appointments are set up with you, in your Microsoft organization.

Status

### What you need

- Microsoft 365 with Exchange Online
- An app registered in Microsoft Entra ID, with its secret and your administrator’s consent
- For shared mailboxes, Exchange access for the account that connects them
- For instant inbound email, your attendo instance reachable over HTTPS

**Typical effort.** One or two hours with your Microsoft administrator. What takes longest happens in Microsoft: permissions, consent and access to the shared mailboxes.

### Step 1 · Entra ID registration

Your administrator registers the app, creates the secret and grants the Graph or IMAP and SMTP permissions. We give them to you in writing.

### Step 2 · Mailboxes in attendo

You add your organization and connect each mailbox by signing in with Microsoft.

### Step 3 · Each mailbox, to its queue

Which folder is read, who can send, inbound or outbound, and the flows that turn email into documents.

### Step 4 · The optional parts

Instant inbound email, sign-in with Microsoft and Outlook appointments, whenever you need them.

## What it does not do

- **Personal email**
  Work mailboxes such as support@ or maintenance@ are connected, not each person’s individual mailbox.
- **OneDrive and SharePoint**
  It does not use them for document management: attachments are stored with the document.
- **Changes made in Outlook**
  If someone moves the appointment in Outlook, attendo does not pick it up: the appointment is changed from attendo.
- **Users created from Entra ID**
  It does not create users or assign roles from Entra ID. Each person must already exist in attendo, with the same email address.

## What goes with it

- [Communications](https://attendo.me/en/communications): Email, WhatsApp, phone and portal on the same record.
- [attendo + Microsoft Teams](https://attendo.me/en/integrations/microsoft-teams): Bot chats in the inbox and meetings from the document.
- [attendo Ticketing](https://attendo.me/en/ticketing): Each support email, a ticket with its SLA.
- [Security](https://attendo.me/en/security): Two-factor authentication, permissions and traceability.

[All integrations](https://attendo.me/en/integrations) Every connection, with its real status.

## Frequently asked questions

### Do we need the Microsoft administrator?

Yes. Only an administrator of your organization can register the app and grant consent to the permissions.

### Does it work with shared mailboxes?

Yes, and it is the most common case. It needs the app permission and the person’s access to the mailbox in Exchange.

### What happens if the secret expires?

The mailbox stops renewing its access and Settings flags it. A new secret is created in Microsoft and saved in attendo. If someone revokes access, you just reconnect.

### Do I lose email if instant inbound email fails?

No. The periodic check keeps running underneath: at worst, it takes as long as it would without it.

### Can I have mailboxes from several organizations?

Yes. Each organization is set up separately, with its own credentials and mailboxes.

## Connect your support mailbox in the demo

We will show you how your emails look as documents and what your Microsoft administrator would need to prepare.

- With your operation, not a generic demo
- A real person from our team replies
- No cold calls afterwards

Would you rather talk first?

- Phone [+34 910 053 530](tel:+34910053530)
- Email [sales@attendo.me](mailto:sales@attendo.me)
- Monday to Thursday 9:30 AM to 6:30 PM and Friday 9:30 AM to 2:30 PM (Spain time)
