Gets or sets header field "Message-ID:" value. Returns null if value isn't set.
Syntax: '<'id-left@id-right'>'. Example: <621bs724bfs8@jnfsjaas4263>
Assembly: LumiSoft.Net Version: 2.0.2636.18419 (Module: LumiSoft.Net)
Assembly: LumiSoft.Net Version: 2.0.2636.18419 (Module: LumiSoft.Net)