没有 sendgrid 的 ASP.NET mvc5 中的电子邮件确认

Question

标题几乎说明了这一点。有没有办法在不使用发送网格的情况下将电子邮件确认添加到我的应用程序？我的 Azure 帐户不允许我使用它，说它在我的区域中不可用，我似乎找不到其他解决方案。

Answer 1

我没有在我的网站中使用 sendgrid 来提供电子邮件确认服务。我认为在流量低的小型网站上使用它没有意义。

我改用 gmail SMTP 服务，效果很好：

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net.Mail;
using System.Web;

namespace MyProject.MyClasses
{
public class GmailEmailService : SmtpClient
{
    // Gmail user-name
    public string UserName { get; set; }

    public GmailEmailService():
        base( ConfigurationManager.AppSettings["GmailHost"], Int32.Parse(ConfigurationManager.AppSettings["GmailPort"]) )
    {
        //Get values from web.config file:
        this.UserName = ConfigurationManager.AppSettings["GmailUserName"];
        this.EnableSsl = Boolean.Parse( ConfigurationManager.AppSettings["GmailSsl"] );
        this.UseDefaultCredentials = false;
        this.Credentials = new System.Net.NetworkCredential(this.UserName, ConfigurationManager.AppSettings["GmailPassword"]);
    }


}

}

在 Web.Config 文件中添加以下内容：

  <configSections>

      <appSettings>

        <!--Smptp Server (confirmations emails)-->
        <add key="GmailUserName" value="[your user name]@gmail.com"/>
        <add key="GmailPassword" value="[your password]"/>
        <add key="GmailHost" value="smtp.gmail.com"/>
        <add key="GmailPort" value="587"/>
        <add key="GmailSsl" value="true"/>

      </appSettings>

  </configSections>

在 App_Start\IdentityConfig.cs 文件中将 SendAsync 方法更改为以下代码：

public class EmailService : IIdentityMessageService
{
public async Task SendAsync(IdentityMessage message)
{

        MailMessage email = new MailMessage(new MailAddress("noreply@myproject.com", "(do not reply)"), 
            new MailAddress(message.Destination));

        email.Subject = message.Subject;
        email.Body = message.Body;

        email.IsBodyHtml = true;

    using( var mailClient = new MyProject.MyClasses.GmailEmailService() )
    {
        //In order to use the original from email address, uncomment this line:
        //email.From = new MailAddress(mailClient.UserName, "(do not reply)");

        await mailClient.SendMailAsync(email);
    }

}
}

注意：您还必须将其添加到 IdentityConfig.cs 文件中：

using System.Net.Mail;

最后一件事是将 AccountController 文件中的以下内容更新为类似内容：

//
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = new ApplicationUser { UserName = model.UserName, Email = model.Email };
        var result = await UserManager.CreateAsync(user, model.Password);
        if (result.Succeeded)
        {
            //Comment the following line to prevent log in until the user is confirmed:
            //await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

            string callbackUrl = await SendEmailConfirmationTokenAsync(user.Id, "Account confirmation");

            // Uncomment to debug locally 
            // TempData["ViewBagLink"] = callbackUrl;

            ViewBag.errorMessage = "Please confirm the email was sent to you.";
            return View("ShowMsg");
        }
        AddErrors(result);
    }

    // If we got this far, something failed, redisplay form
    return View(model);
}


//
// GET: /Account/ConfirmEmail
[AllowAnonymous]
public async Task<ActionResult> ConfirmEmail(string userId, string code)
{
    if (userId == null || code == null)
    {
        return View("Error");
    }
    var result = await UserManager.ConfirmEmailAsync(userId, code);
    return View(result.Succeeded ? "ConfirmEmail" : "Error");
}


private async Task<string> SendEmailConfirmationTokenAsync(string userID, string subject)
{
    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
    // Send an email with this link:
    string code = await UserManager.GenerateEmailConfirmationTokenAsync(userID);
    var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = userID, code = code }, protocol: Request.Url.Scheme);
    await UserManager.SendEmailAsync(userID, subject, "Please confirm your account by <a href=\"" + callbackUrl + "\">clicking here</a>");


    return callbackUrl;
}        

一个可能的视图 ShowMsg.cs 文件可以是：

@{
    ViewBag.Title = "Message";
}

<h1 class="text-danger">@ViewBag.Title</h1>
@{
    if (String.IsNullOrEmpty(ViewBag.errorMessage))
    {
        <h3 class="text-danger">An error occurred while processing your request.</h3>
    }
    else
    {
        <h3 class="text-danger">@ViewBag.errorMessage</h3>
    }
}

就是这样！，它对我有用。

附言： 您必须在您的 gmail 帐户中允许“不太安全的应用程序”选项。 follow that gmail link

我使用以下文章来编写该解决方案：

Create a secure ASP.NET MVC 5 web app with..

ASP-NET-MVC-Confirm-Registration-Email

stackoverflow-email-using-gmail-smtp-in-asp-net-mvc-application

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