Mailinator - Any Inbox. Any Time.
url.dev - Create short, temporary, self-destructing messages and links
TempMail.altmails - Disposable temporary email addresses
Cryptgeon - Securely share self-destructing notes
Harakirimail - Harakirimail is a free disposable email service. Just send email to anythingyouwant@harakirimail.
BURN.link - Send secure, encrypted, self-destructing messages