To email to your
 
log into your www.amazon.co.uk account
and navigate to

Your Account > Manage Your Kindle > Personal Document Settings

NB - Charges apply to 3G transfers
but WiFi downloads to WiFi enabled devices are free
.

You will need to edit settings in:-

  • Whispernet Delivery Options
    Set to "Enable"
    (set to 0.00 to force use of free WiFi)

  • Approved Personal Document E-mail List
    To add addresses you wish to send from.

It may also be an idea to enable archiving in:-

  • Personal Document Archiving

When set up, send your .pdf files as attachments to the email address
shown on the Personal Document Settings page and it will download when next you have a connection with 3G (paid) or WiFi (free).