Replace SendGrid with SMTP2Go for email delivery (#1385)

* Initial plan

* Replace SendGrid with SMTP2Go email service

Co-authored-by: ardalis <782127+ardalis@users.noreply.github.com>

* Add SMTP2Go email service tests and update configuration templates

Co-authored-by: ardalis <782127+ardalis@users.noreply.github.com>

* Update to use the api

* optimize for api instead of smtp

* Adding config class

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: ardalis <782127+ardalis@users.noreply.github.com>
Co-authored-by: Steve Smith <steve@kentsmiths.com>

Author: Copilot

ApiMailSenderOptions.cs

@@ -0,0 +1,8 @@
+namespace DevBetterWeb.Infrastructure.Services;
+
+public class ApiMailSenderOptions
+{
+  public string? ApiBaseUrl { get; set; }
+  public string? ApiKey { get; set; }
+  public string? Sender { get; set; }
+}

README.md

@@ -15,7 +15,7 @@ Head over to [devBetter.com](https://devbetter.com) to see the live site. Scroll
 - Register
 - Login
 - View Public Questions/Topics
-- Validate Accounts via Email (SendGrid)
+- Validate Accounts via Email (SMTP2Go)
 
 ### Members Only
 

src/DevBetterWeb.Infrastructure/DevBetterWeb.Infrastructure.csproj

@@ -20,7 +20,6 @@
     <PackageReference Include="Markdig" />
     <PackageReference Include="MediatR" />
     <PackageReference Include="NimblePros.Vimeo" />
-    <PackageReference Include="Sendgrid" />
     <PackageReference Include="Ardalis.EFCore.Extensions" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" />

src/DevBetterWeb.Infrastructure/InfrastructureServiceCollectionExtensions.cs

@@ -26,7 +26,7 @@ public static IServiceCollection AddInfrastructureServices(this IServiceCollecti
 		}
 		else
 		{
-			services.AddTransient<IEmailService, SendGridEmailService>();
+			services.AddTransient<IEmailService, Smtp2GoEmailService>();
 		}
 
 		// Common Dependencies

src/DevBetterWeb.Infrastructure/Services/ApiMailSenderOptions.cs

@@ -0,0 +1,8 @@
+namespace DevBetterWeb.Infrastructure.Services;
+
+public class ApiMailSenderOptions
+{
+  public string? ApiBaseUrl { get; set; }
+  public string? ApiKey { get; set; }
+  public string? Sender { get; set; }
+}

src/DevBetterWeb.Infrastructure/Services/AuthMessageSenderOptions.cs

@@ -2,6 +2,7 @@
 
 public class AuthMessageSenderOptions
 {
-  public string? SendGridUser { get; set; }
-  public string? SendGridKey { get; set; }
+  public string? SmtpServer { get; set; }
+  public int SmtpPort { get; set; } = 587;
+  public string? ApiKey { get; set; }
 }

src/DevBetterWeb.Infrastructure/Services/SendGridEmailService.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Ardalis.GuardClauses;
+using DevBetterWeb.Core.Interfaces;
+using Microsoft.Extensions.Options;
+
+namespace DevBetterWeb.Infrastructure.Services;
+
+public class Smtp2GoEmailService : IEmailService
+{
+  private readonly HttpClient _httpClient;
+  public Smtp2GoEmailService(IOptions<AuthMessageSenderOptions> optionsAccessor)
+  {
+    Guard.Against.Null(optionsAccessor, nameof(optionsAccessor));
+    Guard.Against.Null(optionsAccessor.Value, nameof(optionsAccessor.Value));
+    Options = optionsAccessor.Value;
+    _httpClient = new HttpClient();
+  }
+
+  public AuthMessageSenderOptions Options { get; }
+
+  public async Task SendEmailAsync(string email, string subject, string message)
+  {
+    if (string.IsNullOrEmpty(Options.ApiKey)) throw new Exception("SMTP API Key not set.");
+
+    var request = new HttpRequestMessage(HttpMethod.Post, "https://api.smtp2go.com/v3/email/send");
+    request.Headers.Add("Authorization", $"Bearer {Options.ApiKey}");
+
+    var payload = new
+    {
+      sender = "donotreply@devbetter.com",
+      to = new[] { email },
+      subject = subject,
+      text_body = message,
+      html_body = message
+    };
+    string json = JsonSerializer.Serialize(payload);
+    request.Content = new StringContent(json, Encoding.UTF8, "application/json");
+
+    var response = await _httpClient.SendAsync(request);
+    if (!response.IsSuccessStatusCode)
+    {
+      var error = await response.Content.ReadAsStringAsync();
+      throw new Exception($"SMTP2GO API error: {response.StatusCode} - {error}");
+    }
+  }
+}

src/DevBetterWeb.Infrastructure/Services/Smtp2GoEmailService.cs

@@ -60,7 +60,7 @@
 
 builder.Services.AddLogging();
 
-builder.Services.Configure<AuthMessageSenderOptions>(builder.Configuration.GetSection("AuthMessageSenderOptions"));
+builder.Services.Configure<ApiMailSenderOptions>(builder.Configuration.GetSection("ApiMailSenderOptions")); 
 builder.Services.Configure<DiscordWebhookUrls>(builder.Configuration.GetSection("DiscordWebhookUrls"));
 builder.Services.Configure<StripeOptions>(builder.Configuration.GetSection("StripeOptions"));
 builder.Services.Configure<SubscriptionPlanOptions>(builder.Configuration.GetSection("SubscriptionPlanOptions"));

src/DevBetterWeb.Web/Program.cs

@@ -14,6 +14,11 @@
 	"ApiSettings": {
 		"ApiKey": "[api key string goes here]"
 	},
+	"ApiMailSenderOptions": {
+		"ApiBaseUrl": "https://api.smtp2go.com/v3/",
+		"ApiKey": "[smtp2go api key goes here]",
+		"Sender": "donotreply@devbetter.com"
+	},
 	"Logging": {
 		"ApplicationInsights": {
 			"LogLevel": {