iot/projects/Infrastructure/Email/EmailSender.cs

using MailKit.Net.Smtp;
using MimeKit;

namespace Infrastructure.Email
{
    public class EmailSender : IEmailSender
    {
        public void SendMail(string name,
            string from,
            string to,
            string subject,
            string body,
            string host,
            int port,
            string userName,
            string password)
        {
            var message = new MimeMessage();
            message.From.Add(new MailboxAddress(name, from));
            message.To.Add(MailboxAddress.Parse(to));
            message.Subject = subject;
            message.Body = new TextPart("html") { Text = body };
            using var client = new SmtpClient
            {
                ServerCertificateValidationCallback = (s, c, h, e) => true
            };
            client.Connect(host, port, false);
            client.AuthenticationMechanisms.Remove("XOAUTH2");
            client.Authenticate(userName, password);
            client.Send(message);
            client.Disconnect(true);
        }
    }
}