iPad Pro 12.9 (2018)
It's not possible to send and receive email messages
Solution 2 of 4: The email message isn't written correctly
You can send and receive email messages from your email accounts. To send and receive email messages, you need to set up your tablet for email.
Press the email icon.
Press arrow left.
Press arrow left.
Press the required email account.
Press the new email icon.
Press the field next to "To:" and key in the first letters of the recipient's name.
Press the required contact.
Press the field next to "Subject:" and key in the required subject.
Press the text input field and write the text for your email.
Press and hold the text input field until a pop-up menu is displayed.
Press Insert Photo or Video and follow the instructions on the screen to attach a picture or a video clip.
Press Add Attachment and follow the instructions on the screen to attach a document.
Press Send when you've finished your email.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.