One-Time Secret - One-Time Secret is a way to share sensitive information simple and secure.
Password Pusher - Go Ahead. Email Another Password.
Privnote - Send notes that will self-destruct after being read
Password.link - Securely send and receive secrets using a one-time link. The secret is encrypted and decrypted in the browser using an encryption key only known by the user. Has features like notifications, teams, API. Trusted by IT teams all around the world.
ShareYourPass.com - share your pass allows you to share your login passwords with other people
Revealit.me - ReveaiIt.me allows you to send a one time link to a self-destructing document.