Open the Photos app
Select the photo you want to send
Tap the Share button
Tap Mail
Enter the recipient’s email address
Add a subject if needed
Tap Send
Open the Mail app
Tap the Compose button
Enter the recipient’s email address
Tap in the message body
Tap the arrow or photo attachment option if available
Choose Photo Library
Select the photo you want to attach
Tap Choose
Tap Send
In an email draft, tap and hold in the message body
Tap Insert Photo or Video
Select the photo
Tap Choose
Tap Send