I would suggest setting up an account at FormsCentral. You can sign up for a single month or two. You simply you upload a PDF form and then download the enabled version that you then distribute to your users. The form will include a submit button that when clicked will send the form data to FormsCentral. You can access the responses table and export the data and use it with a spreadsheet. The data is submitted securely, unlike using email, and this method is far more reliable than email. You will be able to download any response as a filled-in PDF and allow members of your team access to the data.
Note that tablet users will need to use Adobe Reader (iOS/Android) and the forms will have to be manually submitted when internet access is available, it won't happen automatically.