Antispam Policies

We are one of the most trusted email service providers in Thailand. We provide trusted and protected consumer experience on the email service. Therefore, We have developed various policies, procedures, and adopted several industry best practices to help protect our consumers from abusive, unwanted or malicious email.


1.     Email sent to Debutmail users must comply with all Debutmail policies governing email transmission and use of Debutmail.

2.     Email sent to Debutmail users must adhere to all applicable laws and regulations governing email communications in the applicable jurisdiction.


· Email Marketers Must Honor "Unsubscribe" Claims

3.     Email servers connecting to Debutmail must adhere to the following requirements:

· Sender is expected to comply with all technical standards for the transmission of Internet email, as published by The Internet Society's Internet Engineering Task Force (IETF), including RFC 2821, RFC 2822, and others.

· After given a numeric SMTP error response code between 500 and 599 (also known as a permanent non-delivery response), the sender must not attempt to retransmit that message to that recipient.

· After multiple non-delivery responses, the sender must cease further attempts to send email to that recipient.

· Sender must not open multiple simultaneous connections to Debutmail inbound email servers without making prior arrangements.

· Messages must not be transmitted through insecure email relay or proxy servers.

· The mechanism for unsubscribing, either from individual lists or all lists hosted by the sender, must be clearly documented and easy for recipients to find and use.

· Connections from dynamic IP space may not be accepted.

· Email servers must have valid reverse DNS records.

· Senders must not use namespace mining techniques against Debutmail inbound email servers. This is the practice of verifying email addresses without sending (or attempting to send) emails to those addresses.

4.     Email sent to Debutmail users should include SPF authentication. While, other forms of authentication are available, Debutmail currently only validates inbound mail via SPF and DKIM authentication.



4.     We prohibit sending unsolicited emails or messages using our services. You may not in connection with the services engage in commercial activity or high volume activity without our prior written consent. You may not engage in conduct or activity that is disruptive to the services or the experience of other users.