Are tempemails safe?

Are tempmails safe?
Do you know some open sourced and/or encrypted?

If you asking is tempmail selling your data or not. I guess they are but you already using it to sign up to spam sites right ? i mean if you visit temp mail website from Tor then it will be hard to identify you and you already adding dumb usernames so it will be a little change to know its real you but if you using it like daily signup i not recommend it because i can easily reset password by that way — and all i know there is a website called simplelogin it hide your real email address (aliases, in case you using temp mail website to hide your email address not for spam signup)

GuerrillaMail’s email is powered by
Go-Guerrilla, our open-source project.

https://www.guerrillamail.com/

https://maildrop.cc/

https://mailsac.com/

https://yadim.dismail.de/

They are safe if you use them for stuff that couldn’t hurt you if they are leaked, you are supposed to use them for shitty places that require an e-mail.

All of the above are FLOSS.