Send multiple PDF in one mail from Preview

Preview has a function to send files via Mail. I wanted to send several PDF files in one email, but using the built-in function in Preview would only attach them in separate mails.

Anybody know if this is possible?

If you see each one of those .PDf's into a separate file then I believe that you can attach them onto an email one by one.

It may be a preference that's doing this, but don't hold me on that: I'm not quite certain..
What I think Privew is doing is using separate mail as the program thinks that ! Big file will be too much for the email server.