The headers beginning with "X-" are custom headers which were added by the Renaissance Emailer. These headers may be interpreted by a mail reader which is aware of them. In this way, custom headers can specify that the message contains information in a special format, which the mail reader can take advantage of if it knows how. If the mail reader does not recognize a custom header, it is simply ignored.

Renaissance Emailer supports to add any number of such custom headers to your outgoing e-mail.

Renaissance Emailer supports both Rich Text HTML and Plain text messages. Option for Alternative text message gives flexibility to the recipient, to view HTML mails as simple plain text e-mails in case of recipient mailbox do not support HTMLs.

Renaissance emailer provides an inbuilt editor to draft plain text message. However, you can use the drafted text message file to import plain messages.