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