Register email address with imessage

To register an email address with iMessage on an iPhone or iPad, follow these steps:

Method 1: Using the Settings App

1. Open the Settings app on your device.
2. Tap on "Messages" (or "iMessage" on older iOS versions).
3. Tap on "Send & Receive".
4. Tap on "Add Email".
5. Enter your email address and password.
6. Tap "Next" and then "Save".

Method 2: Using the Messages App

1. Open the Messages app on your device.
2. Tap on the "Compose" button (looks like a pencil) to start a new conversation.
3. Tap on the "Details" icon (looks like an "i" in a circle) in the top-right corner of the screen.
4. Tap on "Send & Receive".
5. Tap on "Add Email".
6. Enter your email address and password.
7. Tap "Next" and then "Save".

Once you've registered your email address with iMessage, you'll be able to send and receive messages from that email address. Note that you'll need to have an active internet connection for iMessage to work.

Also, keep in mind that you can only register one email address with iMessage per device. If you want to add multiple email addresses, you'll need to use a different device or use a third-party messaging app.