Use the selectqueryparametertoreturnasubsetofpropertiesforaresource.Withselect, you can specify a subset or a superset of the default properties. For example, from,subject returns only the from and subject properties.
$expand
string
Use the expandquerystringparametertoincludetheexpandedresourceorcollectionreferencedbyasinglerelationship(navigationproperty)inyourresults.‘attachments‘liststhem.Thisistheonewaytogetanextendedproperty:‘singleValueExtendedProperties(filter=id eq ‘String {guid} Name Color’), or multiValueExtendedProperties(…)for one that holds an array. Open extensions need a filter naming one too, or Graph answers 400:extensions($filter=id eq ‘com.contoso.roster’)`.