1. Check your signature settings. To make sure your signature appears on all emails when using email service, follow these steps:

1. Check to make sure your signature is turned on and configured correctly in the settings or options of your email service.
2. Be sure not to exceed the maximum length of the signature, or it may not appear.
3. Check the formatting works properly, verify that the email signature appears properly on various devices.
4. Recheck the email signature after making changes.
5. Restart the device if there is no change after following the steps provided.