See METHODS in Mail::Reporter
You cannot create a delayed header with fields.
A delayed message header cannot contain any information, so cannot be build. You can construct complete or subset headers.
Get the information about the header line NAME. Realization will take place.
On a delayed head, this retuns undef
, because when there is no header
there is also no body.
For messages in directory or network organized folders, Mail::Message::size() usually will give a figure for the whole message without much cost. Subtract a few hundred bytes for the header, and you will get a good estimate.
Make a guess about when the message was originally posted.
On a delayed head, this returns undef
.
For messages in directory or network organized folders,
Mail::Message::timestamp() usually will give a figure without much cost.