网上找了一下，发现一个很不错的邮件发送服务Mailgun，首先要注册Mailgun账号，获得apikey以及domainame；
然后项目中安装nuget：
配置并注册服务：
public interface IEmailSender ???{ ???????Task SendEmailAsync(string email, string subject, string message); ???}
public class EmailSender:IEmailSender ???{ ???????private readonly EmailSettings _emailSettings; ???????public EmailSender(IOptions<EmailSettings> emailOptions) ???????{ ???????????_emailSettings = emailOptions.Value; ???????} ???????public Task SendEmailAsync(string account, string subject, string mess) ???????{ ???????????var domainName = _emailSettings.DomainName; ???????????var apiKey = _emailSettings.ApiKey; ???????????var sender = new MailgunSender(domainName, apiKey); ???????????Email.DefaultSender = sender; ???????????var email = Email.From(_emailSettings.From, "XXXXXXX平台") ???????????????.To(account) ???????????????.Subject(subject) ???????????????.Body(mess); ???????????return email.SendAsync(); ???????} ???} public class EmailSettings ???{ ???????public string ApiKey { get; set; } ???????public string ApiBaseUri { get; set; } ???????public string RequestUri { get; set; } ???????public string From { get; set; } ???????public ?string DomainName { get; set; } ???} #region 注册邮件服务 ???????????services.Configure<EmailSettings>(Configuration.GetSection("EmailSettings")); ???????????services.AddTransient<IEmailSender, EmailSender>(); ???????????#endregion调用：
public class TestController : Controller ???{ ???????private readonly IOptions<EmailSettings> _emailOptions; ???????private readonly ILogger<TestController> _logger; ???????private readonly IEmailSender _emailSender; ???????public TestController(IOptions<EmailSettings> emailOptions,ILogger<TestController> logger,IEmailSender emailSender) ???????{ ???????????_emailOptions = emailOptions; ???????????_logger = logger; ???????????_emailSender = emailSender; ???????} ???????public async Task<IActionResult> Index() ???????{ ???????????try ???????????{ ???????????????string code = "259878"; ???????????????await _emailSender.SendEmailAsync("3sdaasdadasdad6@qq.com",EmailType.Captcha ,$"验证码：{code}，如非本人操作请忽略。"); ???????????????_logger.LogInformation("发送邮件，to："+"3asdasdadad6@qq.com"+",类型："+EmailType.Captcha); ???????????????return Content("ok"); ???????????} ???????????catch (Exception e) ???????????{ ???????????????return Content("出错了："+e.Message); ???????????} ???????????????????} ???}收到验证码：
asp.net core 2.0 邮件发送服务
原文地址：https://www.cnblogs.com/hany-sundigital/p/10030131.html