What is a sender configuration (configuration set)?
You can use configuration sets to customize sending rules and settings for different email types, such as marketing and notification emails. This improves sending efficiency and optimizes overall marketing performance.
Support for other settings, such as user unsubscribe levels, data tracking status, and email tags, will be added in a future release.
Manage sender configurations
1. Configure through the console
Path: Email Settings > Sender Configuration
To create a configuration set, click Create Configuration in the upper-right corner of the page. Enter a name, a description, and the associated IP information.

You can also edit or delete existing configuration sets on this page.
2. Use a configuration set
Emails sent from the console, API, or SMTP automatically use the configuration set attached to the sender address. You do not need to specify the configuration set in your code. For more information, see Three ways to send emails.
Use a configuration set when sending emails
You can associate a configuration set with a sender address. When you send an email, the platform automatically finds and applies the associated configuration set based on the sender address.

Click Associate Configuration Set or Change Configuration Set. In the dialog box that appears, select an existing configuration set. Each sender address can be associated with only one configuration set. Multiple sender addresses can be associated with the same configuration set.

After making a selection, click Confirm Association to complete the process.
FAQ
Q: If I specify IP Pool A when I create a sending task, but the configuration set associated with the sender address uses IP Pool B, which IP pool is used for sending?
A: IP Pool A is used.
The settings in a sending task and the settings in an associated configuration set are prioritized as follows:
If a sender address is associated with a configuration set and you do not specify fields such as the IP pool or email tags in an API request or in the console, the system automatically uses that configuration set for sending.
If you specify fields such as the IP pool or email tags in an API request or a sending task, those settings take priority. This is useful when you need to temporarily switch IP pools or perform A/B testing.