After buying an HP wireless printer that prints directly from email, I wanted to print some photos from my Windows phone. Unfortunately the phone automatically downsizes image files sent via email. I didn't find any real solutions searching online, so a bit of experimenting led me to a work around: email the file(s) via Outlook.com. If you own a Windows phone you have an Outlook email account. On your phone, open Internet Explorer, navigate to Outlook.com and log in. Choose "PC site" on the bottom of the page. Once there, choose "New" to open the composition, then "Insert>Files as attachments" and you can select files from your phone or Onedrive. The attached file(s) will retain the original full resolution.