If we want to test this we can use a simple Mail client.

要想对此进行测试，使用简单的邮件客户端即可。

youdao

Since then wake up his early already lose simple mail after waiting for the mood.

从此唤醒自己早已经失去的单纯的邮寄的等待之后的心情。

youdao

STMP (Simple Mail Transfer Protocol) is the Internet protocol used to send mail to a server.

STMP（简单邮件传输协议）是用于将将邮件发送到服务器的因特网协议。

youdao

Professor Prusinkiewicz is on sabbatical leave in Australia, but he sent us an e-mail suggesting a simple way to understand the process.

VOA: special.2009.10.13

If you need a personal computer for writing and simple electronic mail, even a used PC with a 486 processor will be fine.

CNN: Tips for the PC Buyer

But for now the company is practicing what it preaches and focusing on the most important task on its to do list: create a great, simple mobile e-mail app.

CNN: New iPhone app vows to fix e-mail clutter

The protocols used to encode and transfer e-mail messages are simple and are not owned by anyone.

ECONOMIST: Monitor