To compose a new message, do the following:

1. Go to any folder;
2. Tap the  "Compose" icon in the upper right corner of the screen;  
3. Enter the recipients' addresses in the "To:" and "Cc:" fields. As you enter a recipient's address, matching email addresses from your address book and mobile device (if you granted access to your contacts) will appear in a dropdown list.
   You can use addresses stored in your phone's address book. To do this, tap the corresponding field and touch the  "Plus" icon.
4. You can attach an image to a message. To do this, tap the  "Paperclip" icon, and take a photo or choose an existing image from your photo album.
5. Enter the message's text and tap "Send". If you want to save your message to the "Drafts" folder in order to send it later, tap  "Cancel" and choose "Save to Drafts".

You can change the automatic signature in the app's Signature settings.