Enter the recipients addresses in the “To:” and “Cc:” fields. As you start typing an address, matching contacts from your phone’s or mailbox' address book will be displayed (provided you allowed access to your phone's contacts in the app settings). To select contacts from the address book manually, tap the “To:”, “Cc:”, or “Bcc:” field, then tap the “Add” icon.
To attach an image, tap the paperclip icon and take a new photo using your phone’s camera or choose an image from your camera roll. If you want to remove a file attached by mistake, tap the icon on the file.
Enter text in the message body and tap “Send”. To save the message to Drafts, tap “Cancel” and then choose “Save to Drafts”.
You can edit the default signature in the “Signature” section of the app settings.