ui/readviewcontroller.md

+The ReadViewController has the following states:
+
+- Normal mail
+- Draft
+
+Depending on the Mail it is displaying it can have the following states:
+
+- Secure
+- Insecure
+   - Encrypted, not signed
+   - Signed, not encrypted
+   - Neither signed, nor encrypted 
+- Trouble
+   - Show the body of the mail
+   - Dont't show the body of the mail
+- Unable to decrypt
+- Insecure while secure mails where received before
+- New lock (public key)
+
+The following states offer direct actions to the user:
+
+- Trouble: Show message or ignore
+- Insecure while secure mails where received before: Send secure mail and ask for confirmation
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