The address to reply to (for posting articles).
This property contains the address to reply to (for posting articles). If this property contains a non-empty string, a Reply-To article header is created for the article. This header shows the address to use for replies (useful if this address is different from the one in ArticleFrom).
If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 850 specifications.
This property is not available at design time.