This is used in our experiment with HomeKit hub.
Send IFTTT an email at email@example.com 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.
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Philips Hue and Email