SpaceSpeak

SpaceSpeak allows users to submit messages that can be sent out into the universe using radio waves. The transimtter itself isn't incredibly powerful (less than a kilowatt total radiated power) but it allows anybody to send messages to the stars that theoretically will exist for eons though most likely be too weak to interpret by amy possible aliens. Sending a basic text message is free after creating an account on the website. Sending images or audio costs a small fee.