Attachments not sent in email

I’m using your plugin with the P2 theme to send posts and comments to members. If the post has an attached picture it is not sent with the text. I use the WP user frontend plugin to upload multiple pics as attachments. Most members don’t know how to use the WP media upload/insert in post.
Is there any way I can fix the email content?

https://wordpress.org/plugins/p2-by-email/