java
,
javamail
Java Mail
如何刪除Hotmail上的信件?
SMTP
SMTP+SSL/TLS時,如何設定trusted host?
Reference
使用1.5+版本後出現NoClassDefFoundError
javamail source download
JDK 8 will use TLS 1.2 as default
Javamail SMTP over TLS using SSLv3
official site