MailMergeSettings is not available even if it appears in 'Metadata Coverage'

[h3ll91rl]

Have wrote the XML file to retrieve MailMergeSettings based on Salesforce documentation.

<types>
	<name>MailMergeSettings</name>
</types>

https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_mailmergesettings.htm

Execute command:

sf project retrieve start --manifest path/package.xml --target-org environment

The error received that it is not supported, however it appears in 'Metadata coverage' page.

https://developer.salesforce.com/docs/metadata-coverage/65