> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sellauth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set Customer Newsletter

> Subscribes or unsubscribes a customer from the shop's newsletter. Only subscribe a customer who actually consented; a subscribed customer can be targeted by your email campaigns and automations.



## API Specification

The full API specification for this endpoint is available in the [documentation index](https://docs.sellauth.com/llms.txt).


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