Add an IFTTT contact in your iPhone with the email address email@example.com. Tell Siri to send an email to IFTTT and say you want #hue as the subject when prompted.
Send IFTTT an email at firstname.lastname@example.org with a hashtag in the subject (e.g. #IFTTT) and this Trigger fires. You can optionally add a single file attachment (up to 30MB) and IFTTT will create a public URL to the file as an Ingredient.
This Action will turn on your hue lights.
Explore more great ways to automate
Philips Hue and Email