Type perlbug on your command line and follow the directions. When you get to the prompt:

Now that you have completed your report, would you like to send
the message to perlbug@perl.org, display the message on the
screen, re-edit it, display/change the subject, or cancel
without sending anything? You may also save the message as a
file to mail at another time.

Action (Send/Display/Edit/Subject/Save to File):
[download]

type 'save' and give a path/filename then either copy or attach that to an email sent using your normal email mechanism to the address given above.

At least, that's how I have done it in the past. If anyone can suggest improvements to this procedure, feel free to correct me.