Mail Service (ESP) Mail return one: marked as spam!

e-mail as an important tool for business communication, the world's first e-mail was born in 1971, China's first mail was born in 1998, China's Mail has been developed for 30 years. No matter how the Internet changes, e-mail is one of the most important tools for business communication.

However, enterprises in the delivery and delivery of mail and the rate of achievement of various indicators, or lack of proprietary talent. Some enterprises use third-party mail service providers, and some build their own mail servers. However, the proliferation of Internet spam has led to the advent of various anti-spam technologies. So that our normal mail delivery is blocked. e-mail marketing staff and related technical personnel, only a full understanding of the various techniques of mail, and mail service provider mail back to the reason, to better send mail.

Mail Service (ESP) Mail return one: marked as spam!

When we send mail to esp such as (@btinternet. com) This email service provider. When we send an email, we will return the message when it is sent to us by the various reasons that ESP thinks we are spam.

The sending mail service also retried several times to send the message, but it was all back. It can be seen that once marked as spam, it is difficult to send an e-mail to the ESP again. So, we have to figure out why we are considered spam.

From the perspective of the content of the message, how does the mail Service provider judge the message as spam?
How to avoid the spam box to avoid being blocked?
The Microsoft Mail platform rejects the spam message principle.

There are a lot of articles on the internet about spam and more about it.

Series Articles:
Mail Service (ESP) Mail return one: marked as spam!
e-mail Service (ESP) Mail return two: Hard Bounce