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The mail relay service is a service that allows you to smoothly send mass emails such as newsletters. For those who are considering improving the efficiency of their email newsletter delivery, we will introduce three advantages of mail relay from a cost and practical standpoint, as well as points to consider when choosing a service. Simply put, a mail relay service is a service that allows you to send large amounts of email quickly and reliably. First, let's take a look at how mail relay works, the problems that can occur when sending mass email newsletters, and the importance of mail relay. How email relay works Like bucket relay, mail relay is a service that sends emails through the mail server of a third-party mail relay service provider.

It is a service specialized in sending emails, and provides more stable sending than sending to the recipient directly through a third party. Since a mechanism called SMTP (Simple Mail Transfer Protocol) is generally used for sending emails, it is also sometimes called "SMTP mail relay" or "SMTP integration". Mass mailing is a method of sending the same email to everyone at the same time. Since the email Singapore Email List newsletter is sent to the same target audience, it is useful when you want to check the reaction to a new product or service. However, the email open rate is lower than with segmented mailing. This is because once a customer determines that the email newsletter is "not relevant to them," they will not read it. Also, depending on the recipient's spam filter, the email may be judged as spam and may not be received. Another problem is that the email may be treated as spam. As mentioned above, SMTP is used to send email. When you send an email from a device such as a PC or smartphone, it is sent to the recipient's email server via the sender's email server, and then reaches the recipient's device.



All email transmissions are carried out according to this agreement, and anyone can send email as long as they comply with SMTP. However, a problem arose with this system: the rampant spread of spam and other junk mail. Due to a lack of security, even servers that were not originally involved could be used as relay points for spam mail sent by third parties. As a measure to prevent the rampant spread of such spam, a mechanism was developed to limit the amount of mail that could be sent within a certain period of time. As a result, there has been an improvement in terms of spam measures for the recipient, but from the sender's perspective, there is a problem that it is not possible to deliver large amounts of email at once, and there is also a risk that the sending ISP (Internet service provider) will regard the email as spam and block it, which can result in non-delivery or delays in delivery of emails.
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Singapore Email List

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