This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A person or thing which notifies or provides notification.

n. One who or that which notifies; specifically, an appliance in connection with a coal-miner's safety-lamp which serves to give warning of the presence of a dangerous amount of fire-damp in the atmosphere of the mine-workings.

"Applications ranging from an incoming call notifier on your television, to an SMS editor on your laptop, to a photo gallery application on a wireless picture frame in the living room, will access your content."