You can send your print data in PDF format in the following ways:
URL – link to access the file through one of online file transfer services for sending large documents (eg. JumboMail, WeTransfer, Dropbox)
Send as mail: firstname.lastname@example.org
deliver print data on date storage devices (CD, DVD, USB memory stick)
Your print data file can be successfully compressed by means of compression programmes such as ZIP, RAR, 7-Zip and others. Apart from compressing files, you can also use these programmes to send multiple smaller files in a single folder.
Instructions for print data file preparation can be downloaded here.