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Mail-Advanced.ReadWrite.All

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Application Read/Write All Resources

Allows the app to create, read, update, and delete all email, including contents of non-draft emails in user mailboxes, without a signed-in user. Does not include permission to send mail.

Delegated Access App-Only Access

Permission Details

Application Permission

Read and write mail in all mailboxes, including modifying existing non-draft mails

Allows the app to create, read, update, and delete all email, including contents of non-draft emails in user mailboxes, without a signed-in user. Does not include permission to send mail.

Permission ID: e118f1da-5c1c-46cf-bff6-8858d786f46f

Graph Methods

Delegated access App-only access

No API methods available for this version.

No API methods available for this version.

No PowerShell cmdlets found for this permission.

No PowerShell cmdlets found for this permission.

Code Examples

C# / .NET SDK 
// Install: dotnet add package Microsoft.Graph
// Install: dotnet add package Azure.Identity
using Microsoft.Graph;
using Azure.Identity;



// Application permissions - daemon/service app
var tenantId = "YOUR_TENANT_ID";
var clientId = "YOUR_CLIENT_ID";
var clientSecret = "YOUR_CLIENT_SECRET";

var credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
var graphClient = new GraphServiceClient(credential);

// Example: GET /users/{user-id}
var users = await graphClient.Users.GetAsync();
foreach (var user in users?.Value ?? [])
{
    Console.WriteLine($"User: {user.DisplayName}");
}
JavaScript / TypeScript 
// npm install @azure/msal-browser @microsoft/microsoft-graph-client
import { PublicClientApplication } from "@azure/msal-browser";
import { Client } from "@microsoft/microsoft-graph-client";
import { AuthCodeMSALBrowserAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/authCodeMsalBrowser";

const msalConfig = {
    auth: {
        clientId: "YOUR_CLIENT_ID",
        authority: "https://login.microsoftonline.com/YOUR_TENANT_ID"
    }
};

const pca = new PublicClientApplication(msalConfig);
await pca.initialize();



// Application: Use client credentials (Node.js backend only)
// npm install @azure/identity @microsoft/microsoft-graph-client
import { ClientSecretCredential } from "@azure/identity";
import { TokenCredentialAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/azureTokenCredentials";

const credential = new ClientSecretCredential(
    "YOUR_TENANT_ID",
    "YOUR_CLIENT_ID", 
    "YOUR_CLIENT_SECRET"
);

const authProvider = new TokenCredentialAuthenticationProvider(credential, {
    scopes: ["https://graph.microsoft.com/.default"]
});

const graphClient = Client.initWithMiddleware({ authProvider });
const result = await graphClient.api("/users").get();
console.log(result);
PowerShell 
# Install Microsoft Graph PowerShell module
Install-Module Microsoft.Graph -Scope CurrentUser



# Application access with certificate
$params = @{
    ClientId = "YOUR_CLIENT_ID"
    TenantId = "YOUR_TENANT_ID"
    CertificateThumbprint = "YOUR_CERT_THUMBPRINT"
}
Connect-MgGraph @params

# Or with client secret (not recommended for production)
# Connect-MgGraph -ClientSecretCredential $credential

# Example: GET /users
$result = Invoke-MgGraphRequest -Method GET -Uri "https://graph.microsoft.com/v1.0/users"
$result | ConvertTo-Json -Depth 5

# Always disconnect when done
Disconnect-MgGraph
Python 
# pip install msgraph-sdk azure-identity
from azure.identity import InteractiveBrowserCredential, ClientSecretCredential
from msgraph import GraphServiceClient
import asyncio



# Application permissions - client credentials
credential = ClientSecretCredential(
    tenant_id="YOUR_TENANT_ID",
    client_id="YOUR_CLIENT_ID",
    client_secret="YOUR_CLIENT_SECRET"
)
scopes = ["https://graph.microsoft.com/.default"]
client = GraphServiceClient(credential, scopes)

async def get_users():
    # Example: GET /users
    result = await client.users.get()
    for user in result.value:
        print(f"User: {user.display_name}")
    return result

asyncio.run(get_users())

App Registration

1

Navigate to Azure Portal

Go to App registrations in Microsoft Entra admin center

2

Add API Permission

Select your app → API permissions → Add a permission → Microsoft Graph

3

Select Permission Type

Choose Application permissions and search for Mail-Advanced.ReadWrite.All

4

Grant Admin Consent

Application permissions always require admin consent. Click "Grant admin consent" in the Azure portal.