Send Email Through NetEase Enterprise Mail with Spring Boot

Spring Boot sends SMTP mail through JavaMailSender. Use the exact server, port, encryption mode, and authorization credential supplied by the enterprise mailbox administrator.

spring:
  mail:
    host: smtp.qiye.163.com
    port: 465
    username: user@example.com
    password: ${MAIL_PASSWORD}
    protocol: smtp
    properties:
      mail.smtp.auth: true
      mail.smtp.ssl.enable: true
      mail.smtp.connectiontimeout: 10000
      mail.smtp.timeout: 10000
      mail.smtp.writetimeout: 10000

A basic send operation:

SimpleMailMessage message = new SimpleMailMessage();
message.setFrom("user@example.com");
message.setTo("receiver@example.com");
message.setSubject("Test message");
message.setText("Mail sent by Spring Boot");
mailSender.send(message);

Some accounts require an app-specific authorization code rather than the login password. Authentication failures can also result from an incorrect sender address, blocked SMTP service, TLS/port mismatch, DNS, firewall rules, or provider rate limits. Keep credentials outside source control.