.NetCore使用MailKit发送和接收邮件的方法

Install-Package MailKit

dotnet add package MailKit

using MailKit.Net.Smtp;  
using MailKit.Security;  
using MimeKit;  
public void SendEmail(string from, string to, string subject, string body)  
{  
    var message = new MimeMessage();  
    message.From.Add(new MailboxAddress("发件人显示名", from));  
    message.To.Add(new MailboxAddress("收件人显示名", to));  
    message.Subject = subject;  
    message.Body = new TextPart("plain") { Text = body };  
    using (var client = new SmtpClient())  
    {  
        // 这里替换为你的SMTP服务器地址、端口、用户名和密码  
        client.Connect("smtp.example.com", 587, SecureSocketOptions.StartTls);  
        client.Authenticate("your-username", "your-password");  
        client.Send(message);  
        client.Disconnect(true);  
    }  
}

using MailKit.Net.Imap;  
using MailKit.Search;  
using MimeKit;  
public void ReceiveEmails(string host, int port, bool useSsl, string username, string password)  
{  
    using (var client = new ImapClient())  
    {  
        try  
        {  
            // 如果使用SSL，则设置UseSsl = true  
            client.Connect(host, port, useSsl);  
            client.Authenticate(username, password);  
            // 打开收件箱  
            var inbox = client.Inbox;  
            inbox.Open(FolderAccess.ReadOnly);  
            // 搜索邮件，这里以搜索所有邮件为例  
            foreach (var uid in inbox.Search(SearchQuery.All))  
            {  
                var message = inbox.GetMessage(uid);  
                Console.WriteLine("Subject: {0}", message.Subject);  
                // 可以根据需要处理邮件内容  
            }  
            client.Disconnect(true);  
        }  
        catch (Exception ex)  
        {  
            Console.WriteLine("An error occurred: " + ex.Message);  
        }  
    }  
}