shell sendmail
Subject: title-testing
From: ze.csm@xxx.com
To: ze.csm@xxx.com
Cc: ze.csm@xxx.com
MIME-VERSION: 1.0
Content-Type: multipart/mixed; boundary="GvXjxJ+pjyke8COw"
Content-type: text/html; charset=gb2312
#发送
cat content.txt |sendmail -t
https://blog.csdn.net/caoshuming_500/article/details/47344045
