The user interface that children see in Maily is very kid-friendly. Using Maily children can draw pictures, use templates to create emails, and or upload pictures to send. To send an email children click the send button and the select the image of the person to they want to receive their messages.
The video below provides a good overview of Maily.
Introducing Maily for iPad from Maily on Vimeo.
Applications for Education
Using Maily could be a great way to introduce young children to email in a safe environment. You could use the Maily app to have students send weekly emails to their parents about what they did in your classroom each week.