By default, email is sent from the Apple iPhone with a “Sent from my iPhone” message. To remove it, you need to change the email signature using these steps.
- From the Home screen, tap “Settings“.
- Tap the “Mail, Contacts, Calendars” button.
- Tap “Signature“.
- Change the signature text from “Sent from my iPhone” to be blank or to whatever you like. If you selected “Per Account” in step 4, you may have to set the signature for several accounts such as Gmail, AOL, etc. as desired.
This post applies to Apple iOS 9.