Microsoft Graph API - Search email using application permission - microsoft-graph-api

Question

I want to search email using Graph API in my own developed application. By referring to these threads - Graph Api: Region is required when request with application permission , How to use Graph API Sharepoint Search from console app , Search content with application permissions , I tried to run the search which resulted in Application permission is only supported for the following entity types:site, list, listItem, drive and driveItem. (Request and response json is below).
Does it mean that using an app like a console application developed in C# will not be able to search the emails (as message is not mentioned in error response - only these are mentioned: site, list, listItem, drive and driveItem) even if it has required secret, auth token and permissions?
Request:
URL : https://graph.microsoft.com/beta/search/query
Request Payload:
{
"requests": [
{
"entityTypes": [
"person"
],
"query": {
"queryString": "contoso"
},
"Region" : "NAM",
"from": 0,
"size": 25
}
]
}
Response:
{
"error": {
"code": "System.UnauthorizedAccessException",
"message": "Application permission is only supported for the following entity types:site, list, listItem, drive and driveItem.",
"target": "",
"httpCode": 403
},
"Instrumentation": {
"TraceId": "7174e417-a2fe-02e5-1523-1fcda7a66886"
}
}