/usr/local/bin/sendEmail -f xxxx@163.COM(发件邮箱) -s smtp.163.com -u "邮件标题" -m "邮件内容" -o message-content-tyPE=htML -o message-charset=utf8 -xu xxxx@163.com（发件邮箱账号） -xp “网易邮箱授权码” -t “目标邮箱”

#!/bin/bash
to=$1
subject=$2
body=$3
/usr/local/bin/sendEmail -o tls=auto -f xxxx@163.com -t "$to" -s smtp.163.com -u "$subject" -o message-content-type=html -o message-charset=utf8 -xu xxxx@163.com -xp "邮箱客户端授权码" -m "$body"

[root@centos7 alertscripts]# ./mail.sh “目标邮箱” test_topic hello_world!
*******************************************************************
 Using the default of SSL_verify_mode of SSL_VERIFY_NONE for client
 is dePRecated! Please set SSL_verify_mode to SSL_VERIFY_PEER
 possibly with SSL_ca_file|SSL_ca_path for verification.
 If you really don't want to verify the certificate and keep the
 connection open to Man-in-The-Middle attacks please set
 SSL_verify_mode explicitly to SSL_VERIFY_NONE in your application.
*******************************************************************
 at /usr/local/bin/sendEmail line 1906.
invalid SSL_version specified at /usr/share/perl5/vendor_perl/IO/Socket/SSL.pm line 444.

[root@centos7 alertscripts]# ./mail.sh “目标邮箱” test_topic hello_world!
*******************************************************************
 Using the default of SSL_verify_mode of SSL_VERIFY_NONE for client
 is deprecated! Please set SSL_verify_mode to SSL_VERIFY_PEER
 possibly with SSL_ca_file|SSL_ca_path for verification.
 If you really don't want to verify the certificate and keep the
 connection open to Man-In-The-Middle attacks please set
 SSL_verify_mode explicitly to SSL_VERIFY_NONE in your application.
*******************************************************************
 at /usr/local/bin/sendEmail line 1906.
Aug 08 15:42:42 wanbu sendEmail[25763]: Email was sent successfully!