When you take your iPad out of the box, you will notice that Apple has applied its own "signature" as per your email sent. To customize it your way, here's a guide to changing it.
Steps

Step 1. Go to "Settings" on iPad

Step 2. Select "Mail"> "Contacts"> "Calendar" from the sidebar

Step 3. Click on the Signature option

Step 4. Clear the default message
Either leave this field blank or add your own message.
