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Your text messages can be sent as either regular text messages or iMessages. iMessages can be sent to phone numbers or email addresses if the recipient has a device which supports iMessages. Remember, you need to activate your Apple ID.
1. Find "Messages"
2. Turn on iMessages
3. Turn sending of read reply on or off
4. Turn text message alternative on or off
5. Add email address
Press Use your Apple ID for iMessage.
Press Add Another Email....
6. Return to the home screen
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