Not selecting an encryption option generates a regular message.
Using transposition to encode your message rearranges the letters in one of three ways:
A question lock allows you to create a question that the recipient will be required to answer correctly in order to view your message. You can increase the difficulty by opting out of displaying the character length of the answer to your question.
The snake encryption type arranges your message so that it requires a snakelike motion to decipher it. The four options show the starting point and the initial direction to read your message.
Interactive types engage the recipient in deciphering your secret message. Selecting one of these automatically sets your message to self destruct after being viewed once to ensure your recipient does not try to cheat to reveal your message (by opening it on another computer to give it another try for instance). You have three different interactive types to choose from: