How can I use the invisible ink to send message on iphone 7?

Question

To avail the cool features like sending messages using invisible ink or sending other animations like balloons or confetti, you need to use 3D Touch or just hold down the send button to bring up the new and improved messaging menu.

Then you can select options such as “invisible ink” from the menu.

Answer 1

1. Type the message you want to send like you normally would in the Messages app.
2. Tap and hold the blue arrow in the text field until the "Send with effect" screen opens.
3. Select the INVISIBLE INK option then tap the blue arrow to send the message.