Deferred Delivery support

[brycemccullough]

Does the MailEnable SMTP server support the deferred delivery header?

[MailEnable]

Current Versions do not support the Deferred-Delivery header. Which client are you using to generate the header. Because if you are using Outlook (as an example) the message will sit the the outbox until such time as the message is due for delivery.
Assuming the client submits it to the SMTP agent, it does seem simple enough to implement, so we may include this in Version 6 (which is expected to be released before the end of the year).