<PackageReference Include="NETStandard.Library" Version="2.0.3" />

System.Net.Mail.LinkedResource

namespace System.Net.Mail { public class LinkedResource : AttachmentBase { public Uri ContentLink { get; set; } public LinkedResource(Stream contentStream); public LinkedResource(Stream contentStream, ContentType contentType); public LinkedResource(Stream contentStream, string mediaType); public LinkedResource(string fileName); public LinkedResource(string fileName, ContentType contentType); public LinkedResource(string fileName, string mediaType); public static LinkedResource CreateLinkedResourceFromString(string content); public static LinkedResource CreateLinkedResourceFromString(string content, ContentType contentType); public static LinkedResource CreateLinkedResourceFromString(string content, Encoding contentEncoding, string mediaType); } }