C#/.NET开发问题

Attaching Image in the body of mail in C#(在 C# 的邮件正文中附加图像)
Sending mail without installing an SMTP server(在不安装 SMTP 服务器的情况下发送邮件)
How to send an e-mail with C# through Gmail(如何通过 Gmail 使用 C# 发送电子邮件)
Setting multiple SMTP settings in web.config?(在 web.config 中设置多个 SMTP 设置?)
Testing SMTP server is running via C#(测试 SMTP 服务器正在通过 C# 运行)
How to send email to multiple address using System.Net.Mail(如何使用 System.Net.Mail 向多个地址发送电子邮件)
Send Email via C# through Google Apps account(通过 Google Apps 帐户通过 C# 发送电子邮件)
Outlook autocleaning my line breaks and screwing up my email format(Outlook 自动清理我的换行符并搞砸了我的电子邮件格式)
change sender address when sending mail through gmail in c#(在c#中通过gmail发送邮件时更改发件人地址)
SmtpException: Unable to read data from the transport connection: net_io_connectionclosed(SmtpException:无法从传输连接读取数据:net_io_connectionclosed)
5.7.57 SMTP - Client was not authenticated to send anonymous mail during MAIL FROM error(5.7.57 SMTP - 在 MAIL FROM 错误期间,客户端未通过身份验证发送匿名邮件)
How can I make SMTP authenticated in C#(如何使 SMTP 在 C# 中进行身份验证)