写好邮件信息，单击定时发送按钮，弹出发送时间设置框，设置时间要早于系统当前时间。设置好后单击确定按钮，这封邮件会保存到草稿箱中，定时发送邮件和草稿箱其他邮件的区分的方式是通过判断时间是否早于当前时间，然后利用定时器和监听来实现每隔1分钟去数据库中查找草稿箱有没有发送时间等于当前系统时间的，如果有就发送，发送完成之后转到发件箱中。-Write E-mail information, click the send button regularly, pop-up send time Settings dialog, set a time to be earlier than the current system time. Click ok button after setting up, this email will save to draft box, timing to send the draft email and other mail box of distinguish way is by judging whether time is earlier than the current time, and then use the timer and listening to realize every 1 minute to draft database search box have send time is equal to the current system time, if there is sent, send after departure in the box.