Here are a few steps to consider when troubleshooting why your email contacts are not showing up:

1. Check the settings in your email account to ensure that contacts are enabled.
2. Verify that contacts are stored and viewable in your email account.
3. Confirm that the contacts you are trying to send messages to are included in your email contact list.
4. Try to send a message to a contact that you know is saved in your contact list.