Hello tameion,
Please rest assured that Aqua Mail does not share, upload, or store any of your account data, including passwords, on our servers. Everything, your email credentials, settings, and messages, is stored only locally on your device and managed securely by the Android operating system.
If a data breach report includes your email addresses, it means those addresses were found in a public database leak from another source, not from Aqua Mail. We recommend changing your email passwords and enabling two-factor authentication for extra security, but you can be fully confident that Aqua Mail itself does not send or store your credentials anywhere outside your phone.