Automator Help with Mail

Hello Everyone,

Although Automator is awesome for making repetitive tasks just a click away, I've been looking for an action and I can't find it.

Here is the thing :

I drag a PDF file to an Automator Application,

- the PDF file is tagged orange

- the PDF file is sent to a Dropbox Folder

- the Mail app open a new message with the PDF and some text in the subject and message.

What I try to do, is if I want to send the mail to "John Whatever" after selecting his email adress, I would like to have the mail starting with :

Hello John,

Is there a way to put name variable, so whatever contact I select it will display "Hello (name)," at the beggining of the message?

Thanks a lot!