Direct Mail have implemented a one-click unsubscription function, which collects unsubscription addresses in a recipient-friendly way and filters them from the unsubscription list according to certain rules when sending emails. The one-click unsubscription function will improve your email complaints, increase the reputation of your mailing address, and increase the inbox entry rate.
The one-click unsubscription function follows RFC 2369 and RFC 8058 protocol standards. Currently, well-known email service providers such as Google, Microsoft and Yahoo are friendly to this support.
Whether to display the unsubscription button is determined by the recipient's policy. For example Gmail, if the domain reputation does not meet the requirements, the unsubscribe button will not be displayed immediately.
The following section describes the mechanism and usage of the one-click unsubscription feature.
1. The Unsubscription Mechanism
The unsubscription link will be written to the List-Unsubscribe in the message header and will not affect your body. The unsubscribe links are generated for Enterprise Email of Google and ProtonMail as well as specific domain names, such as with keywords "gmail", "yahoo", "google", "aol.com", "hotmail","outlook", "ymail.com", etc. The Microsoft Enterprise Mail does not generate unsubscribe links.
2. Filter Mechanism for Unsubscribing Address List
The unsubscribed address will be put into your exclusive unsubscription list. When you send emails, they will be filtered from the unsubscription list according to the filter level. If they are in the unsubscription list, the delivery will fail. The unsubscription addresses take effect within one hour. The following filter levels are divided into the following three levels:
Sending Address Level: checks whether the recipient has unsubscribed from this sending address. If yes, the delivery will fail.
Sending Domain Name Level: checks whether the recipient has unsubscribed from the sending address under the sending domain name. If yes, the delivery will fail. We recommend that you distinguish the domain name that sends bulk emails from sending trigger emails.
Account Level: Check whether the recipient has unsubscribed from all the sending addresses under your Alibaba Cloud account. If yes, the delivery will fail. It is recommended that all users who address promotion and marketing turn on the secondary level.
The unsubscription feature generates links and filters as follows:
Scenes | Whether to generate a link | Filtering Mechanism |
Batch Send (Default) | Yes | Send Address Level |
Trigger Address (default) | No | No Filtering |
Achieve the One-click Unsubscriptiontion by User | Maintain the Link of User | No Filtering |
User Independent Choice | Autonomous Choice | Autonomous Choice |
Specific ways for users to choose independently:
To send mails through SMTP, you need to generate two configuration items: unsubscription link and unsubscription filter level according to the Configure the Message Header to Control the Specified Function for SMTP Sending Method.
To send mails through API,please refer to the interface documentation: SingleSendMail/BatchSendMail.
3. Manage and Query the Unsubscription Address List
This method will be available soon.