Create and send an email with an attachment of the current image. To find this tool, click the Email icon on the Share tab.

The Email Image dialog has the familiar To, Subject, and Message fields available to allow you to compose your message. The Email Settings button allows you to choose the settings that Photopad will use to send your email.
After composing your message and verifying that the email settings are correct, use the file options at the bottom to select format and quality settings for the image. Use the Send button to send the email.

Additional Guide
Having issues sending email? Read more about possible problems when sending email.