Update a SenderPool
This operation partially updates a SenderPool
Basic authentication of the form Basic <account_id:auth_token>.
Basic authentication of the form Basic <api_key:api_key_secret>.
The location (uri) of the resource identified by Resource-Id.
The location (uri) of the resource identified by Resource-Id.
Custom metadata in the form of key-value pairs. Maximum size of a tag key is 128 characters. Maximum size of a tag value is 256 characters. There can be a maximum of 10 key-value pairs.
This field can be templated with Liquid.
Specify variables with each recipient for personalization.