How to submit a pdf without a specific email address

Unfortunately, I don't have access to a web-server, these PDF's will be completed underground, and then submitted via email, which places them in the outbox until such time as the personnel return to the surface. What I currently have is

// Get the email addresses 

var email1 = getField("Site").valueAsString; 

// Send the email 

    mailDoc({

        bUI: false,

        cTo: email1,

        cSubject: "Inspection",

        cMsg: "The message body of the email"

    });

This works, based on the site being selected, which is tied into an email address. The drama is everytime a site starts or closes, I would need to edit the site list on approx 200 forms to add and remove the new and old sites. I want to click submit, and it automatically attaches to an email, and they can add their own email address.

If you have access to a web-server you can create a service on it (in PHP, for example), that will collect the data sent to it from the PDF and then save it to a local folder. That way the user won't have to email the file, just click the Submit button.
And as a bonus you'll be able to provide them with a message when the data was successfully received.