Apisd email header

A very specific question!

apisd is likely a reference to the API Service Discovery (APISD) protocol, which is used to discover and manage APIs.

When it comes to email headers, apisd is not typically used as a header field. However, if you're asking about the headers that are commonly used in API requests or responses, here are a few examples:

Request headers:

• Accept: specifies the format of the response (e.g., JSON, XML)
• Authorization: specifies the authentication mechanism and credentials (e.g., API key, token)
• Content-Type: specifies the format of the request body (e.g., JSON, form data)
• Host: specifies the domain name of the API server
• User-Agent: specifies the client software and version

Response headers:

• Content-Type: specifies the format of the response body (e.g., JSON, XML)
• Location: specifies the URL of a redirect or the location of a resource
• Set-Cookie: sets a cookie on the client
• WWW-Authenticate: specifies the authentication mechanism required for the response

Keep in mind that these are just a few examples, and the specific headers used can vary depending on the API, protocol, and use case.