Is there a way to edit messages as new in Gmail?

I wish for something similar to forward function but with the message body unaltered. Or for a better explanation to use existing emails as a template.

[Update] Why forward doesn't work for me :

Click on forward on a message, delete the signature and FW from the message title :

Message looks OK on the editing form, send it.

Check the message on the other end and here is how it looks :

note the small button ... in the body, that is the message received!

click on the ... button, the text is colored indigoish :

What I want is for the the message in the recipient side to look like this :

Currently I'm holding some templates on gist as raw text and copy them manually and it annoys me to format and embed the images each time I send the message.

Copy/paste from sent messages works at some extent with the text but the images are not embedded and sometimes the format is corrupted.