If you are new to Graph API and want to send an email, then you are in the right place. If your account has multi-factor authentication disabled, just like a noreply account, let’s not waste any time and start coding. Please note, I am using Graph API version 5.56. So, let’s go!
1st create interface
public interface IGraphMailService
{
Task SendMailAsync(string fromAddress,string toAddress, string subject, string content, string ccEmail);
}
Service code
using Azure.Identity;
using Dow.Mjeapi.Biz.Interfaces;
using Dow.Mjeapi.Data.Models;
using Microsoft.Extensions.Configuration;
using Microsoft.Graph;
using Microsoft.Graph.Me.SendMail;
using Microsoft.Graph.Models;
using Microsoft.Identity.Client;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using static System.Formats.Asn1.AsnWriter;
namespace
{
public class GraphMailService : IGraphMailService
{
private readonly IConfiguration _config;
private const string TenantId = "TenantId ";
private const string ClientId = "ClientId ";
private static string[] scopes = new string[] { "https://graph.microsoft.com/.default" };
private const string ClientSecret = "YOURClientSecret ";
public GraphMailService(IConfiguration config)
{
_config = config;
}
private static IPublicClientApplication CreatePublicClientApplication()
{
return PublicClientApplicationBuilder.Create(ClientId)
.WithAuthority(AzureCloudInstance.AzurePublic, TenantId)
.WithDefaultRedirectUri()
.Build();
}
public async Task SendMailAsync( string fromAddress,string toAddress, string subject, string content, string ccEmail)
{
try
{
string? tenantId = _config[TenantId];
string? clientId = _config[ClientId];
string? userName = _config[UserName];
string? password = _config[Password];
var scopes = new[] { "https://graph.microsoft.com/.default" };
var usernamePasswordCredential = new UsernamePasswordCredential(userName, password, tenantId, clientId);
var graphClient = new GraphServiceClient(usernamePasswordCredential, scopes);
var message = new Message
{
Subject = subject,
Body = new ItemBody
{
ContentType = BodyType.Text,
Content = content
},
ToRecipients = new List<Recipient>
{
new Recipient
{
EmailAddress = new EmailAddress
{
Address = toAddress
}
}
},
CcRecipients = new List<Recipient>
{
new Recipient
{
EmailAddress = new EmailAddress
{
Address = ccEmail
}
}
}
//,
//BccRecipients = new List<Recipient>
//{
// new Recipient
// {
// EmailAddress = new EmailAddress
// {
// Address = bccEmail
// }
// }
//}
};
var sendMailRequestBody = new Microsoft.Graph.Me.SendMail.SendMailPostRequestBody
{
Message = message,
SaveToSentItems = true
};
await graphClient.Me.SendMail.PostAsync(sendMailRequestBody);
Console.WriteLine("Email sent successfully");
}
catch (Exception ex)
{
Console.WriteLine($"An error occurred: {ex.Message}");
}
}
and Controller code
using Microsoft.AspNetCore.Mvc;
using System.Threading.Tasks;
using System;
using Microsoft.AspNetCore.Authorization;
namespace ANCD.Test.Controllers
{
[ApiController]
[Route("api/[controller]")]
[Authorize]
public class EmailController : ControllerBase
{
private readonly IGraphMailService _graphMailService;
public EmailController(IGraphMailService graphMailService)
{
_graphMailService = graphMailService;
}
[HttpPost("send")]
public async Task<IActionResult> SendMail([FromBody] MailRequestNew mailRequest)
{
if (mailRequest == null || string.IsNullOrEmpty(mailRequest.FromAddress) || string.IsNullOrEmpty(mailRequest.ToAddress) || string.IsNullOrEmpty(mailRequest.Subject) || string.IsNullOrEmpty(mailRequest.Content))
{
return BadRequest("Invalid mail request.");
}
try
{
await _graphMailService.SendMailAsync(mailRequest.FromAddress, mailRequest.ToAddress, mailRequest.Subject, mailRequest.Content, mailRequest.CcEmail);
return Ok("Mail sent successfully.");
}
catch (Exception ex)
{
return StatusCode(500, $"Internal server error: {ex.Message}");
}
}
}
public class MailRequestNew
{
public string FromAddress { get; set; }
public string ToAddress { get; set; }
public string Subject { get; set; }
public string Content { get; set; }
public string CcEmail { get; set; }
}
}
adjust the azure permission if your are issue to send email these code is tested from my end Thank you.
Happy codding
