Wt

Currently, Wt::Mail::Message only supports one Reply-To address, although the RFC5322 supports multiple Reply-To addresses. Also common web/offline email clients seems to support this (or at least correctly handle multiple Reply-To addresses in a received mail message).

Please find attached a sample implementation of this improvement.

Note that this implementation uses multiple Reply-To header fields (similar to the current implementation of multiple To/CC addresses), although the standard seems to allow only 1 Reply-To/To/CC header field with multiple comma separated addresses. Common web/offline email clients seems to correctly interpret those repeated header fields.