I don't collect any of your data. It never leaves your device, unless you explicitly use export function. The app is completely capable to run offline. There are no accounts with email/password. The accounts needed for i.e. sending an e-mail from within the app or sync your data are managed by iOS and are unreachable for the app.
If you contact me by e-mail, I don't forward any of your personal information to 3rd parties. In case such action is needed, I explicitly ask your permission for doing so.
Any other privacy-relevant situation will be handled using common sense, protecting your privacy having the highest priority.