SMTP sample for email services

SendEmailSMTP/README.MD

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+---
+page_type: sample
+languages:
+- csharp
+products:
+- azure
+- azure-communication-services
+---
+
+# Email Sample
+
+This sample sends an email to the selected recipients of any domain using an [Email Communication Services resource](https://docs.microsoft.com/azure/communication-services/quickstarts/email/create-email-communication-resource) with SMTP.
+
+Additional documentation for this sample can be found on [Microsoft Docs](https://learn.microsoft.com/en-us/azure/communication-services/quickstarts/email/send-email-smtp/send-email-smtp?pivots=smtp-method-smtpclient).
+
+## Prerequisites
+
+- Create an Azure account with an active subscription. For details, see [Create an account for free](https://azure.microsoft.com/free/).
+- [Visual Studio (2019 and above)](https://visualstudio.microsoft.com/vs/).
+- [.NET 6.0](https://dotnet.microsoft.com/download/dotnet/6.0) (Make sure to install version that corresponds with your Visual Studio instance, 32 vs 64 bit).
+- Create an Azure Communication Services resource. For details, see [Create an Azure Communication Resource](https://docs.microsoft.com/azure/communication-services/quickstarts/create-communication-resource).
+- Create an [Azure Email Communication Services resource](https://docs.microsoft.com/azure/communication-services/quickstarts/email/create-email-communication-resource) to start sending emails.
+
+> Note: We can send an email from our own verified domain also [Add custom verified domains to Email Communication Service](https://docs.microsoft.com/azure/communication-services/quickstarts/email/add-custom-verified-domains).
+
+## Code structure
+
+- ./SendEmailSMTP/SendEmailSMTP/Program.cs: Entry point for sending email.
+
+## Before running the sample for the first time
+
+1. Open an instance of PowerShell, Windows Terminal, Command Prompt or equivalent program and navigate to the directory that you'd like to clone the sample to.
+2. `git clone https://github.com/Azure-Samples/communication-services-dotnet-quickstarts.git`
+
+### Locally configuring the application
+
+1. Navigate to the SendEmailSMTP folder and open the `SendEmailSMTP.sln` solution in Visual Studio.
+2. Open the program.cs file to configure the following settings:
+
+- ` smtpAuthUsername`: Replace `<Azure Communication Services Resource name>|<Entra Application Id>|<Entra Application Tenant Id>` as mentioned. For more details please refer:[Microsoft Docs](https://learn.microsoft.com/en-us/azure/communication-services/quickstarts/email/send-email-smtp/smtp-authentication).
+- ` smtpAuthPassword`: Replace `<Entra Application Client Secret>` which is your Microsoft Entra Application Secret. 
+- `sender`: Replace `<SENDER_EMAIL>` with the sender email obtained from Azure Communication Service.
+- `recipient`: Replace `<RECIPIENT_EMAIL>` with the recipient email.
+- The body and message can be added as per your wish. The parameters such as hostname, port, should be kept intact. 
+
+1. Run `SendEmail` project.

SendEmailSMTP/SendEmailSMTP.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34408.163
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SendEmailSMTP", "SendEmailSMTP\SendEmailSMTP.csproj", "{06B928F5-436F-4BE5-904A-80D94C9E02A9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{06B928F5-436F-4BE5-904A-80D94C9E02A9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{06B928F5-436F-4BE5-904A-80D94C9E02A9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{06B928F5-436F-4BE5-904A-80D94C9E02A9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{06B928F5-436F-4BE5-904A-80D94C9E02A9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {79FCEDE6-9F1D-41A9-A8E8-7C3C4FC67EE2}
+	EndGlobalSection
+EndGlobal

SendEmailSMTP/SendEmailSMTP/Program.cs

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+using System.Net;
+using System.Net.Mail;
+
+
+namespace SendEmailSMTP
+{
+    class Program
+    {
+        static void Main(String[] args)
+        {
+            string smtpAuthUsername = "<Azure Communication Services Resource name>|<Entra Application Id>|<Entra Application Tenant Id>";
+            string smtpAuthPassword = "<Entra Application Client Secret>";
+            string sender = "[email protected]";
+            string recipient = "[email protected]";
+            string subject = "Welcome to Azure Communication Service Email SMTP";
+            string body = "This email message is sent from Azure Communication Service Email using SMTP.";
+
+            string smtpHostUrl = "smtp.azurecomm.net";
+            var client = new SmtpClient(smtpHostUrl)
+            {
+                Port = 587,
+                Credentials = new NetworkCredential(smtpAuthUsername, smtpAuthPassword),
+                EnableSsl = true
+            };
+
+            var message = new MailMessage(sender, recipient, subject, body);
+
+            try
+            {
+                client.Send(message);
+                Console.WriteLine("The email was successfully sent using Smtp.");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Smtp failed the the exception: {ex.Message}.");
+            }
+        }
+    }
+}

SendEmailSMTP/SendEmailSMTP/SendEmailSMTP.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>