BccList
Body
CCList
CharSet
ContentDisposition
ContentTransferEncoding
ContentType
Date
Encoding
ExtraHeaders
Flags
From
Headers
IsEncoded
MessageParts
MIMEBoundary
MsgId
NewsGroups
NoDecode
NoEncode
Organization
Priority
ReceiptRecipient
Recipients
References
ReplyTo
Sender
Subject
UID
UseNowForDate